Features: Crafted from robust steel, this swivel chair base ensures lasting durability and supports up to 250 lbs, ideal for office chairs, computer chairs, and bar stools with its tilt adjustable mechanism. The powder coated black steel swivel plate features reinforced joints and a 360° rotation system for smooth, wobble free movement. Perfect for office administrators, home workspaces owners, and commercial furniture maintenance teams requiring reliable chair base replacements. Securely anchors chairs on hardwoods floors, carpeted conference rooms, or counter stools while maintaining ergonomic back support alignment. The tool free installation system allows quick replacement of worn chair bases, with scratch resistant coating ensuring easy cleaning and long term corrosion protection. Specifications: Material: Metal Size:Approx.24cm/9.45''x30.8cm/12.13'' Package Includes: 1Piece Chair Tilt Control Mechanism note: Please allow 1mm errors due to manual measurement. Due to the differences between different monitors, the picture may not reflect the actual color of the item.