HeavyDuty Steel Swivel Base with Mount Plate – 1.22 inch (55 cm) Round Base and 10 inch Square Plate Designed for strength, stability, and smooth rotation, this swivel base is ideal for upgrading or replacing the base on large office chairs, tall gaming chairs, and similar seating solutions. Key Features and Benefits: Large 1.22 inch (55 cm) round swivel base provides exceptional stability for heavier seating. 10 inch square swivel mount plate ensures secure attachment to chair frames. Full 360 degree rotation for smooth and effortless movement in any direction. Constructed from durable steel for longlasting reliability and support. Blackened finish resists wear and maintains a professional look. Compact 1.57 inch total height maintains chair ergonomics while enhancing rotation capability. Compatibility: Fits most big and tall office chairs, heavyduty gaming chairs, and specialty seating requiring a robust swivel mechanism with a 10 inch square mount plate. Performance and Durability: The steel construction provides load capacity and structural integrity, while precision engineering ensures smooth motion and minimal resistance during rotation. The blackened finish protects against rust and surface wear. Practical Applications: 1. Upgrading a big and tall office chair to improve rotation and mobility without compromising stability. 2. Replacing worn swivel bases on heavy gaming chairs to restore effortless 360 degree movement. 3. Custom seating builds where a large, heavyduty base is required for safe and smooth operation. This swivel base is built to deliver reliable performance under demanding use, making it a dependable choice for both replacement and chair construction.