--- product_id: 290604372 title: "Mastery Mart Office Chair Base Replacement, 28 Inch Heavy Duty(2500 Lbs) Metal Leg, Reinforced to Repair Swivel Gaming Chair Bottom Part with Universal Caster and Gas Cylinder Size (Silver)" brand: "mastery mart" price: "€ 299.76" currency: EUR in_stock: true category: "Mastery Mart" url: https://www.desertcart.pt/products/290604372-mastery-mart-office-chair-base-replacement-28-inch-heavy-duty store_origin: PT region: Portugal --- # 28-inch universal diameter fits most chairs BIFMA & ANSI certified reinforced build 2500 lbs heavy-duty metal base Mastery Mart Office Chair Base Replacement, 28 Inch Heavy Duty(2500 Lbs) Metal Leg, Reinforced to Repair Swivel Gaming Chair Bottom Part with Universal Caster and Gas Cylinder Size (Silver) **Brand:** mastery mart **Price:** € 299.76 **Availability:** ✅ In Stock ## Summary > ⚡ Reinvent your chair’s foundation — because your throne deserves the best! ## Quick Answers - **What is this?** Mastery Mart Office Chair Base Replacement, 28 Inch Heavy Duty(2500 Lbs) Metal Leg, Reinforced to Repair Swivel Gaming Chair Bottom Part with Universal Caster and Gas Cylinder Size (Silver) by mastery mart - **How much does it cost?** € 299.76 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/290604372-mastery-mart-office-chair-base-replacement-28-inch-heavy-duty) ## 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 - • **Unmatched Strength:** Supports up to 2500 lbs for ultimate durability and peace of mind. - • **Sleek Silver Finish:** Modern chrome design elevates your workspace aesthetics while reinforcing stability. - • **Effortless Installation:** Comes with a complete installation package and base cap for quick, hassle-free replacement. - • **Universal Compatibility:** Fits nearly every office, gaming, and swivel chair with standard caster and gas lift sockets. - • **Premium Industrial Grade:** Crafted to meet BIFMA and ANSI standards, ensuring long-lasting performance. ## Overview The Mastery Mart Office Chair Base Replacement is a heavy-duty, 28-inch metal base engineered to support up to 2500 lbs. Designed with reinforced construction meeting BIFMA and ANSI standards, it offers universal compatibility with most office and gaming chairs. The package includes all necessary installation components, making it a reliable and stylish upgrade for your swivel chair’s bottom part. ## Description Buy Mastery Mart Office Chair Base Replacement, 28 Inch Heavy Duty(2500 Lbs) Metal Leg, Reinforced to Repair Swivel Gaming Chair Bottom Part with Universal Caster and Gas Cylinder Size (Silver): Casters - desertcart.com ✓ FREE DELIVERY possible on eligible purchases ## Features - ➤ WHAT'S IN THE BOX: 1 Set of Office Chair Silver Base Replacement, Installation Package, 1 Base Cap. - ➤ PREMIUM GRADE METAL MADE STRONG BASE REPLACEMENT: 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 replacement 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) ## Technical Specifications | Specification | Value | |---------------|-------| | ASIN | B07ZY3TZCQ | | Assembled Height | 11 centimeters | | Assembled Length | 70 centimeters | | Assembled Width | 70 centimeters | | Best Sellers Rank | #20,435 in Office Products ( See Top 100 in Office Products ) #30 in Office Furniture Casters | | Customer Reviews | 4.5 4.5 out of 5 stars (1,705) | | Date First Available | July 19, 2019 | | Item Weight | 4.4 pounds | | Item model number | CHAIR | | Product Dimensions | 27.56 x 27.56 x 3.94 inches | | Weight | 3 kg | ## Product Details - **Brand:** MASTERY MART - **Color:** Silver - **Material:** Metal - **Product Dimensions:** 28"D x 28"W x 4"H - **Size:** 70 cm ## Images ![Mastery Mart Office Chair Base Replacement, 28 Inch Heavy Duty(2500 Lbs) Metal Leg, Reinforced to Repair Swivel Gaming Chair Bottom Part with Universal Caster and Gas Cylinder Size (Silver) - Image 1](https://m.media-amazon.com/images/I/51xVt7KLnNL.jpg) ![Mastery Mart Office Chair Base Replacement, 28 Inch Heavy Duty(2500 Lbs) Metal Leg, Reinforced to Repair Swivel Gaming Chair Bottom Part with Universal Caster and Gas Cylinder Size (Silver) - Image 2](https://m.media-amazon.com/images/I/3156JwXQRCL.jpg) ![Mastery Mart Office Chair Base Replacement, 28 Inch Heavy Duty(2500 Lbs) Metal Leg, Reinforced to Repair Swivel Gaming Chair Bottom Part with Universal Caster and Gas Cylinder Size (Silver) - Image 3](https://m.media-amazon.com/images/I/41djY4Qq1kS.jpg) ![Mastery Mart Office Chair Base Replacement, 28 Inch Heavy Duty(2500 Lbs) Metal Leg, Reinforced to Repair Swivel Gaming Chair Bottom Part with Universal Caster and Gas Cylinder Size (Silver) - Image 4](https://m.media-amazon.com/images/I/417scjLkZuS.jpg) ![Mastery Mart Office Chair Base Replacement, 28 Inch Heavy Duty(2500 Lbs) Metal Leg, Reinforced to Repair Swivel Gaming Chair Bottom Part with Universal Caster and Gas Cylinder Size (Silver) - Image 5](https://m.media-amazon.com/images/I/41YCEhE518S.jpg) ## Available Options This product comes in different **Color** options. ## Questions & Answers **Q: How secure is the base of the office chair? Does it have a locking mechanism and sturdy back support?** A: The office chair base is designed with safety in mind. It features a reliable locking mechanism to keep the base stable and secure, along with sturdy base support to prevent accidental tilting or damage, ensuring your safety during use. **Q: What materials are used in the construction of the office chair base? Is it sturdy and durable?** A: The office chair base is made from high-quality materials to ensure it is sturdy up to max capacitu of 2500 LBs and durable, avoiding any cheap feel. Every component undergoes strict quality control, providing reliable support that lasts long-term. **Q: Is the office chair base easy to assemble? Does it come with an installation guide and tools?** A: Yes, the office chair base is designed for easy assembly. It comes with a clear installation guide and all necessary tools, making it simple to replace your existing base—even if you have no prior experience. **Q: How stable is the office chair base? Can it adapt to different floor surfaces?** A: The office chair base is designed for excellent stability, minimizing the risk of tipping. Whether on tile, hardwood, or carpet, it adapts well to various floor types, providing steady support in any environment. **Q: Is the office chair base easy to clean and maintain? Does it require special tools?** A: Yes, the office chair base is designed for easy cleaning and maintenance. Its simple design means no special tools or complicated steps are needed, allowing you to keep the base in great condition with minimal effort. ## Frequently Bought Together - Mastery Mart Office Chair Base Replacement, 28 Inch Heavy Duty(2500 Lbs) Metal Leg, Reinforced to Repair Swivel Gaming Chair Bottom Part with Universal Caster and Gas Cylinder Size (Silver) - Mastery Mart Office Chair Caster Wheels for Hardwood Floors, Heavy Duty and Quiet Smooth Rollerblade Wheels for Office Chair, Universal Size (11x22mm), Suitable for Most Chairs - 9 Inches to 13 Inches Office Chair Cylinder Replacement, 4" Stroke, Heavy Duty 1000lbs, Hydraulic Pneumatic Shock Piston, Universal Fit for Most Office Chairs, Class 4, Polished Steel --- ## Why Shop on Desertcart? - 🛒 **Trusted by 1.3+ Million Shoppers** — Serving international shoppers since 2016 - 🌍 **Shop Globally** — Access 737+ million products across 21 categories - 💰 **No Hidden Fees** — All customs, duties, and taxes included in the price - 🔄 **15-Day Free Returns** — Hassle-free returns (30 days for PRO members) - 🔒 **Secure Payments** — Trusted payment options with buyer protection - ⭐ **TrustPilot Rated 4.5/5** — Based on 8,000+ happy customer reviews **Shop now:** [https://www.desertcart.pt/products/290604372-mastery-mart-office-chair-base-replacement-28-inch-heavy-duty](https://www.desertcart.pt/products/290604372-mastery-mart-office-chair-base-replacement-28-inch-heavy-duty) --- *Product available on Desertcart Portugal* *Store origin: PT* *Last updated: 2026-09-16*