MASTERY MART
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MASTERY MART 28 Inch Office Chair Base, Heavy Duty 2400 Lbs, Reinforced Metal Desk Chair Replacement, Universal Gas Cylinder Hole Caster Socket, Silver
MASTERY MART 28 Inch Office Chair Base, Heavy Duty 2400 Lbs, Reinforced Metal Desk Chair Replacement, Universal Gas Cylinder Hole Caster Socket, Silver
MASTERY MART 28 Inch Office Chair Base, Heavy Duty 2400 Lbs, Reinforced Metal Desk Chair Replacement, Universal Gas Cylinder Hole Caster Socket, Silver
MASTERY MART 28 Inch Office Chair Base, Heavy Duty 2400 Lbs, Reinforced Metal Desk Chair Replacement, Universal Gas Cylinder Hole Caster Socket, Silver
MASTERY MART 28 Inch Office Chair Base, Heavy Duty 2400 Lbs, Reinforced Metal Desk Chair Replacement, Universal Gas Cylinder Hole Caster Socket, Silver
MASTERY MART 28 Inch Office Chair Base, Heavy Duty 2400 Lbs, Reinforced Metal Desk Chair Replacement, Universal Gas Cylinder Hole Caster Socket, Silver
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MASTERY MART 28 Inch Office Chair Base, Heavy Duty 2400 Lbs, Reinforced Metal Desk Chair Replacement, Universal Gas Cylinder Hole Caster Socket, Silver
MASTERY MART 28 Inch Office Chair Base, Heavy Duty 2400 Lbs, Reinforced Metal Desk Chair Replacement, Universal Gas Cylinder Hole Caster Socket, Silver
MASTERY MART 28 Inch Office Chair Base, Heavy Duty 2400 Lbs, Reinforced Metal Desk Chair Replacement, Universal Gas Cylinder Hole Caster Socket, Silver
MASTERY MART 28 Inch Office Chair Base, Heavy Duty 2400 Lbs, Reinforced Metal Desk Chair Replacement, Universal Gas Cylinder Hole Caster Socket, Silver
MASTERY MART 28 Inch Office Chair Base, Heavy Duty 2400 Lbs, Reinforced Metal Desk Chair Replacement, Universal Gas Cylinder Hole Caster Socket, Silver
MASTERY MART 28 Inch Office Chair Base, Heavy Duty 2400 Lbs, Reinforced Metal Desk Chair Replacement, Universal Gas Cylinder Hole Caster Socket, Silver
MASTERY MART 28 Inch Office Chair Base, Heavy Duty 2400 Lbs, Reinforced Metal Desk Chair Replacement, Universal Gas Cylinder Hole Caster Socket, Silver
Opting for a chair base replacement at a fraction of the cost of a new chair is a smart decision if your seat is still in good condition.
MASTERY MART 28 Inch Office Chair Base, Heavy Duty 2400 Lbs, Reinforced Metal Desk Chair Replacement, Universal Gas Cylinder Hole Caster Socket, Silver
Item #: 223800428

MASTERY MART 28 Inch Office Chair Base, Heavy Duty 2400 Lbs, Reinforced Metal Desk Chair Replacement, Universal Gas Cylinder Hole Caster Socket,

85% of respondents would recommend this to a friend

Sustainability Highlights 3 Sustainability Highlights
Item #: 223800428

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Price Details

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Opting for a chair base replacement at a fraction of the cost of a new chair is a smart decision if your seat is still in good condition.
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What Stands Out

Heavy-Duty Capacity
Supports up to 2400 lbs, ensuring stability and durability for all users, making this chair base ideal for a wide range of settings, from home offices to corporate environments.
Reinforced Design
Crafted with a robust metal structure, it guarantees resilience and extends the lifespan of your office chair, outlasting conventional plastic bases commonly found in competitors' products.
Universal Fit
Equipped with a gas cylinder hole caster socket, this chair base provides compatibility with most chairs, allowing for easy replacements without the hassle of purchasing new components.

Product Details

Shop MASTERY MART 28 Inch Office Chair Base, Heavy Duty 2400 Lbs, Reinforced Metal Desk Chair Replacement, Universal Gas Cylinder Hole Caster Socket, Silver online at a best price in Tonga. B09X4LRYTC
Brand NameMASTERY MART
Additional FeaturesErgonomic
Unit Count1 Count
Recommended Uses For ProductOffice
Room TypeOffice
Age Range DescriptionAdult
Included ComponentsBase Only
Surface RecommendationHard Floor
Indoor Outdoor UsageIndoor
Model NumberMM-BASE-REP-C-POLISHED
ManufacturerMastery Mart Inc.
Manufacturer Part NumberMM-BASE-REP-C-POLISHED
Number of Items1
Material TypeMetal
Frame Material TypeMetal
Product Care InstructionsWipe Clean
Seat MaterialMetal
ColorSilver
Back StyleSolid Back
Style NameSilver
PatternSolid
Finish TypesPolished
ShapeRound
Arm StyleArmless
Furniture FinishChrome
Leg StyleStraight Leg
Form FactorMetal
Item Dimensions D x W x H28"D x 28"W x 4"H (71.1 x 71.1 x 10.2 cm)
Size28D x 28W x 4H in
Item Weight3 kg
Item Depth28 inches
Item Dimensions5.12 x 8.31 x 14.88 inches (13 x 21.1 x 37.8 cm)
Furniture Base MovementSwivel
Reclining Position Count1
Maximum Weight Recommendation2400 pounds (1088.62 kg)
BrandMASTERY MART
MaterialMetal
Product Dimensions (L x W x H)28"D x 28"W x 4"H (71.1 x 71.1 x 10.2 cm)

Who Should Buy?

Suitable For
  • Office Workers

    Ideal for office settings requiring sturdy chairs that can support heavy usage and multiple users over time.

  • Gaming Enthusiasts

    Perfect for gamers seeking a durable chair base for extended gaming sessions without compromising stability or comfort.

  • Heavy Users

    Designed specifically for individuals needing a robust chair base that can support higher weight capacities safely.

Not Suitable For
  • Light Users

    May be excessive for individuals who prefer lightweight, portable chair bases for occasional use.

Product Description

Sustainability Highlights

This product has sustainability features recognized by trusted certifications.

Recycled materials

Contains at least 50% recycled material. As certified by

Global Recycled Standard (GRS) certified products contain recycled content (>50%) that has been independently verified at each stage of the supply chain, from the source to the final product and meet social, environmental, and chemical requirements. The purchase of Global Recycled Standard (GRS) certified products supports the use of recycled content in the supply chain. Learn more about this certification

Certification Body
Intertek
Certification Number
TE-00329503
Safer chemicals

Made with chemicals safer for human health and the environment. As certified by

Global Recycled Standard (GRS) certified products contain recycled content (>50%) that has been independently verified at each stage of the supply chain, from the source to the final product and meet social, environmental, and chemical requirements. The purchase of Global Recycled Standard (GRS) certified products supports the use of recycled content in the supply chain. Learn more about this certification

Certification Body
Intertek
Certification Number
TE-00329503
Worker well-being

Manufactured on farms or in facilities that protect the rights and/or health of workers. As certified by

Global Recycled Standard (GRS) certified products contain recycled content (>50%) that has been independently verified at each stage of the supply chain, from the source to the final product and meet social, environmental, and chemical requirements. The purchase of Global Recycled Standard (GRS) certified products supports the use of recycled content in the supply chain. Learn more about this certification

Certification Body
Intertek
Certification Number
TE-00329503
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Customer Questions & Answers

  • Question: What makes the MASTERY MART 28 Heavy Duty Office Chair Base suitable for heavy use?

    Answer: The MASTERY MART 28 Heavy Duty Office Chair Base is designed to support up to 2500 lbs, making it ideal for heavy use. Constructed from reinforced metal, its durability is enhanced to withstand significant weight and daily wear. This ensures that even in busy office environments or home settings, the chair base maintains stability and reliability, helping to prevent any accidents or damage over time.
  • Question: Is the MASTERY MART chair base compatible with most office chairs?

    Answer: Yes, the MASTERY MART chair base features a universal gas cylinder hole that allows it to fit most standard office chairs. This versatility makes it an excellent replacement option regardless of your chair's brand. By allowing easy integration, it saves you the hassle of searching for a specific base and prolongs the life of your existing chair.
  • Question: How can I replace the existing office chair base with the MASTERY MART base?

    Answer: Replacing your office chair base with the MASTERY MART base is straightforward. Simply remove the old base by unscrewing it from the gas cylinder, and then align the new base with the gas cylinder hole. Firmly secure it in place to ensure stability. This process revamps your chair’s functionality, providing a sturdier foundation and enhancing your comfort during prolonged use.
  • Question: Does the MASTERY MART chair base come with casters?

    Answer: Absolutely, the MASTERY MART chair base is equipped with durable casters that facilitate smooth movement across various surfaces. These high-quality wheels enhance mobility, making it easy to transition between tasks in an office or workspace. Whether you're rolling from your desk to a meeting or adjusting your position while working, these casters improve your overall productivity.
  • Question: What types of flooring are suitable for the MASTERY MART chair base casters?

    Answer: The casters on the MASTERY MART chair base are versatile and perform well on multiple flooring types, including hardwood, carpet, tile, and vinyl. Ensure the casters are suitable for your specific flooring to prevent scratches or damage. This adaptability makes the chair base a valuable addition to any office setup, maximizing comfort without compromising your floor's integrity.
  • Question: Can the MASTERY MART chair base support larger body types?

    Answer: Yes, the MASTERY MART chair base is specially engineered to support larger body types, accommodating up to 2500 lbs. This makes it an exceptional choice for users who require reliable support without compromising comfort. Whether for home or office, it provides stability and peace of mind, ensuring that every user can work without concern for their chair's strength.
  • Question: What is the height of the MASTERY MART office chair base?

    Answer: The MASTERY MART office chair base has a height of 28 inches. This height is ideal for most standard desk setups and provides an ergonomic seating position that promotes better posture and comfort. When selecting a chair base, it's essential to ensure that it aligns with your desk height for optimal performance, helping you maintain a healthy workspace.
  • Question: Are the materials used in the MASTERY MART chair base eco-friendly?

    Answer: The MASTERY MART chair base is constructed from durable, high-quality materials that prioritize strength and longevity. While the focus is on functionality rather than eco-friendliness, investing in durable products like this can lead to less frequent replacement, indirectly benefiting the environment. By choosing sturdy options, you contribute to reducing waste in office furniture.
  • Question: Where can I buy the MASTERY MART 28 Heavy Duty Office Chair Base?

    Answer: You can purchase the MASTERY MART 28 Heavy Duty Office Chair Base from Ubuy in Tonga. Ubuy offers a wide selection of office supplies and replacement parts, ensuring you can easily find and order the products you need with confidence and convenience.

MASTERY MART Casters MM-BASE-REP-C-POLISHED Editorial Review

MASTERY MART 28 Inch Office Chair Base is a robust and heavy-duty replacement for your old office chair, capable of supporting up to 2400 lbs. Built with reinforced metal, it promises enhanced durability compared to the typical plastic bases that often fail under pressure. Users have reported significant improvements in stability and performance after switching to this replacement, mentioning the straightforward installation process and perfect fit with various chair models. The ergonomic design is suitable for extended use in an office environment, and its matte black finish adds a sleek look to your workspace. The universal gas cylinder hole caster socket makes it a versatile choice for different types of chairs.

Customer Reviews & Ratings

911 customers ratings
  • 5 Star
    76%
  • 4 Star
    9%
  • 3 Star
    4%
  • 2 Star
    3%
  • 1 Star
    8%

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Pros

  • Supports up to 2400 lbs for heavy users
  • Easy to install with included instructions
  • Ergonomic design enhances office comfort
  • Durable metal construction replaces plastic
  • Fits various chair models seamlessly

Cons

  • Some users experienced difficulty removing old bases

Platform Trust & Buyer Confidence

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Jasmin
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“Great products and very good service: very easy and very fast international delivery.”

9 September 2026 · via Trustpilot
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10 September 2026 · via Trustpilot
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10 September 2026 · via Trustpilot
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“I received exactly what I ordered I was skeptical about your site because that was my first time to order. But the order came timely and neatly packaged. I was not disappointed. Thank you.”

11 September 2026 · via Trustpilot
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Adele
Verified buyer

“Easy to find and order what you want on the website. Delivery is quick to the UK”

8 September 2026 · via Trustpilot
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Important information

  • Limitations : For products shipped internationally, please note that any manufacturer warranty may not be valid; manufacturer service options may not be available; product manuals, instructions, and safety warnings may not be in destination country languages; the products (and accompanying materials) may not be designed in accordance with destination country standards, specifications, and labeling requirements; and the products may not conform to destination country voltage and other electrical standards (requiring use of an adapter or converter if appropriate). The recipient is responsible for assuring that the product can be lawfully imported to the destination country. When ordering from Ubuy or its affiliates, the recipient is the importer of record and must comply with all laws and regulations of the destination country.
  • Not all the products listed on Ubuy are for sale, as Ubuy is a global search engine. Products are subject to export/trade regulations.

TOP 173

Order now and get it around Friday, October 09

QTY:

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Fastest cross-border delivery

Features & Benefits

  • Universal size compatible with most chairs, including top brands.
  • Constructed from high-quality chrome-plated metal for durability.
  • Supports a heavy load capacity of up to 2500 lbs.
  • Enhances safety with a low center of gravity design.
  • Prevents floor scratches, saving on replacement costs.
  • Cost-effective solution to extend the life of your current chair.

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