Features: Enhances your seating experiences with our chair base plate, designed to provide optimally comfort and support for gaming chairs and office environments. Featuring steel chassis, this base plate offers adjustable heights and angle setting, ensuring it meets the diverses needs of different sitting postures. For office workers, students, and gaming enthusiasts who spend extended periods seated at a desk or computer. Perfect for use in offices, home workspaces, school libraries, and gaming rooms where prolonged sitting is common. This replacement mechanism tilt control fit most gaming, executive, and office rotation chairs, making installation easy even for none professional. Specifications: Component:Iron Color:Black Size:Approx.21.5x31cm/8.46x12.2inch Package Includes: 1pcs Adjustable Chair Base Plate note: 1.Please allow 1-2cm errors due to manual measurement, make sure that you donot mind befores you order. 2.Due to the differences between different monitors, the picture may not reflect the actual coloring of the item. Thanks for your understandings.