---
product_id: 176752688
title: "Mastery Mart Office Chair Base Replacement for Office/Desk/Swivel Chair with Cap, Universal Gas Cylinder Socket and Caster Sockets, 28\"(70 cm) Heavy Duty 2200 Lbs/1000 Kg (Matte Black)"
brand: "mastery mart"
price: "€ 122.59"
currency: EUR
in_stock: true
category: "Mastery Mart"
url: https://www.desertcart.pt/products/176752688-mastery-mart-office-chair-base-replacement-for-office-desk-swivel
store_origin: PT
region: Portugal
---

# Universal 28-inch diameter Heavy-duty metal base Easy installation kit Mastery Mart Office Chair Base Replacement for Office/Desk/Swivel Chair with Cap, Universal Gas Cylinder Socket and Caster Sockets, 28"(70 cm) Heavy Duty 2200 Lbs/1000 Kg (Matte Black)

**Brand:** mastery mart
**Price:** € 122.59
**Availability:** ✅ In Stock

## Summary

> 🪑 Reinvent your throne with strength and style!

## Quick Answers

- **What is this?** Mastery Mart Office Chair Base Replacement for Office/Desk/Swivel Chair with Cap, Universal Gas Cylinder Socket and Caster Sockets, 28"(70 cm) Heavy Duty 2200 Lbs/1000 Kg (Matte Black) by mastery mart
- **How much does it cost?** € 122.59 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.pt](https://www.desertcart.pt/products/176752688-mastery-mart-office-chair-base-replacement-for-office-desk-swivel)

## Best For

- mastery mart enthusiasts

## Why This Product

- Trusted mastery mart brand quality
- Free international shipping included
- Worldwide delivery with tracking
- 15-day hassle-free returns

## Key Features

- • **Peace of Mind:** Backed by a satisfaction guarantee—if it doesn’t fit, return it hassle-free.
- • **Built to Endure:** Premium-grade metal supports up to 2200 lbs/1000 kg for unmatched durability.
- • **Sleek & Stealthy:** Matte black finish adds a modern, professional touch to your workspace aesthetic.
- • **Fits Like a Glove:** Universal gas cylinder and caster sockets ensure seamless compatibility with almost any office or gaming chair.
- • **Effortless Upgrade:** Includes a simple installation package with clear instructions—get your chair base replaced in minutes.

## Overview

The Mastery Mart Office Chair Base Replacement is a heavy-duty, 28-inch diameter metal base designed to support up to 2200 lbs/1000 kg. Featuring universal sockets for gas cylinders and casters, it fits most office, gaming, and swivel chairs. Finished in matte black, it combines durability with a sleek look and comes with an easy-to-follow installation kit and satisfaction guarantee.

## Description

Mastery Mart Office Chair Base Replacement for Office/Desk/Swivel Chair with Cap, Universal Gas Cylinder Socket and Caster Sockets, 28"(70 cm) Heavy Duty 2200 Lbs/1000 Kg (Matte Black) : desertcart.co.uk: Home & Kitchen

## Features

- WHAT'S IN THE BOX: 1 Set of Office Chair Black Base *************************************************************, Installation Package, 1 Base Cap.
- PREMIUM GRADE METAL MADE STRONG BASE *************************************************************: This Heavy Duty Chrome Base Stool is manufactured to meet the Office Chair's highest industry standard (BIFMA and ANSI). The reinforced metal and durability of the base will ensure your chair's base is firmly sound for many years.
- UNIVERSAL SIZE: The office chair base works perfectly with almost every office chair, gaming chair, desk chair, task chair and swivel chair on the market. The office chair base ************************************************************* has universal sockets that will fit your original casters and gas lift cylinder.
- SIZE DETAIL: Office Chair Base Size in Diameter: 28’’ (70 cm). Chrome Base Leg Length: 12.6’’ (32 cm). Standard Gas Cylinder Socket: 2’’ (5 cm). Standard Caster Sockets: 7/16’’ x 7/8’’ (11mm x 22mm). Height of the Chrome Base: 4’’ (10 cm)
- 100% SATISFACTION ************************************************************* - Very easy installation and ************************************************************* with our simple and clear instruction sheet. If this doesn't fit your chair, you can simply ************************************************************* it for a full *************************************************************.

## Technical Specifications

| Specification | Value |
|---------------|-------|
| ASIN | B07ZY36NJ1 |
| Age Range Description | Adult |
| Arm Style | Armless |
| Assembly Instructions Description | Included, Easy to follow |
| Back Style | Solid Back |
| Best Sellers Rank | 288,612 in Home & Kitchen ( See Top 100 in Home & Kitchen ) 661 in Desk Chairs |
| Brand Name | MASTERY MART |
| Colour | Black |
| Customer Reviews | 4.7 4.7 out of 5 stars (991) |
| Finish Type | Matte |
| Form Factor | Recliner |
| Frame Material Type | Metal |
| Furniture Base Movement | Swivel |
| Furniture Finish | Black,Matte |
| Included Components | Caster |
| Indoor Outdoor Usage | Indoor |
| Is Assembly Required? | Yes |
| Is Customizable? | No |
| Is Extendable | No |
| Is Foldable | No |
| Item Depth | 70 centimetri |
| Item Dimensions | 70 x 70 x 10 centimetres |
| Item Dimensions D x W x H | 70D x 70W x 10H centimetres |
| Item Shape | Round |
| Item Weight | 4.95 Pounds |
| Leg Style | wheels |
| Manufacturer | Mastery Mart Co., Limited |
| Manufacturer Part Number | Mastery Mart |
| Material Type | Metal |
| Maximum Weight Recommendation | 997.9 kg |
| Model Number | Mastery Mart |
| Number of Items | 1 |
| Number of Packs | 1 |
| Pattern | Solid |
| Product Care Instructions | Wipe Clean |
| Reclining Position Count | 1 |
| Recommended Uses For Product | Gaming, Office |
| Room Type | Game Recreation Room, Office |
| Seat Height | 28 Inches |
| Seat Material Type | Metal |
| Set Name | Chair Base Set |
| Size | 70D x 70W x 10H cm |
| Sleeping Bag Filling Material | Foam |
| Special Features | 11mm x 22mm, Durable, Easy to Replace and Install, Heave Duty, Quality Guaranteed |
| Style Name | Contemporary |
| Surface Recommendation | Hard Floor |
| Theme | Contemporary |
| Tilting | No |
| Unit Count | 1.0 count |

## Product Details

- **Brand:** MASTERY MART
- **Colour:** Black
- **Material:** Metal
- **Product dimensions:** 70D x 70W x 10H centimetres
- **Size:** 70D x 70W x 10H cm

## Images

![Mastery Mart Office Chair Base Replacement for Office/Desk/Swivel Chair with Cap, Universal Gas Cylinder Socket and Caster Sockets, 28"(70 cm) Heavy Duty 2200 Lbs/1000 Kg (Matte Black) - Image 1](https://m.media-amazon.com/images/I/51WVM0Ag+GL.jpg)
![Mastery Mart Office Chair Base Replacement for Office/Desk/Swivel Chair with Cap, Universal Gas Cylinder Socket and Caster Sockets, 28"(70 cm) Heavy Duty 2200 Lbs/1000 Kg (Matte Black) - Image 2](https://m.media-amazon.com/images/I/31Fp6JnYAKL.jpg)
![Mastery Mart Office Chair Base Replacement for Office/Desk/Swivel Chair with Cap, Universal Gas Cylinder Socket and Caster Sockets, 28"(70 cm) Heavy Duty 2200 Lbs/1000 Kg (Matte Black) - Image 3](https://m.media-amazon.com/images/I/41CxU0i6aSL.jpg)
![Mastery Mart Office Chair Base Replacement for Office/Desk/Swivel Chair with Cap, Universal Gas Cylinder Socket and Caster Sockets, 28"(70 cm) Heavy Duty 2200 Lbs/1000 Kg (Matte Black) - Image 4](https://m.media-amazon.com/images/I/51fozvcqzuL.jpg)
![Mastery Mart Office Chair Base Replacement for Office/Desk/Swivel Chair with Cap, Universal Gas Cylinder Socket and Caster Sockets, 28"(70 cm) Heavy Duty 2200 Lbs/1000 Kg (Matte Black) - Image 5](https://m.media-amazon.com/images/I/41BiqA6no7L.jpg)

## Available Options

This product comes in different **Color** options.

## Questions & Answers

**Q: Would this work as a replacement base for a DXRacer king series chair?**
A: It's a standard diameter so yes. I've replaced the base on an x-rocker chair, and it made an immediate improvement

**Q: Hi, i bought homcom pu leather office w/massage function, high back-red &the base's gone - split into 2. would this one be suitable as a replacement?**
A: yes it would

**Q: Struggling to remove the old base from my old is it possible that the base and cylinder is one piece?**
A: I know this is a very old comment but for anyone else who might see it, the cylinder can be hard to remove.
There's many YouTube videos about it but what worked for me with a really stubborn one was having half the legs of the base on the side of a bed and hammering the cylinder directly from the bottom, hard. 
I'd spent 10 minutes trying other methods but this eventually worked.

**Q: I have a gas lift that starts off 40cm then expands to 50cm. I'm unsure if this base will work with this or not?**
A: This 'spider' like all these seat bases are universal; I ordered mine as a replacement for a defective existing base it fitted and worked very well.  You should have no problems.

## Frequently Bought Together

- MASTERY MART Heavy Duty Office Chair Base Replacement, 2500 Lbs, 28"(70 cm), Metal Desk Chair Base Replacement Parts with Universal Gas Cylinder Hole and Casters Sockets, Matte Black
- Office Chair Caster Wheels Set of 5 Heavy Duty & Safe for All Floors Including Hardwood 2" Rubber Replace Office Chair Mat, Universal Standard Stem Size Fits 99%-Grey
- 9 Inches to 13 Inches Office Chair Cylinder Replacement, 4'' Stroke, Heavy Duty 1000 lbs, Hydraulic Pneumatic Shock Piston, Universal Gas Cylinder Fit for Most Office Chairs, Class 4 (Polished Steel)

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*Product available on Desertcart Portugal*
*Store origin: PT*
*Last updated: 2026-10-27*