SWIVEL BASE MOUNTS. Specifications: - Material: Premium pickling plate - Surface treatment: Black paint - 10-inch turntable - Screw hole distance: 215mm (8.5 inches) - Bearing diameter: 230mm (9 inches) - Aperture: 23mm (0.9 inches) - Length: 244mm (9.6 inches) - Width: 242mm (9.5 inches) - Height: 20mm (0.8 inches) - Weight: 2138g - Bearing capacity: 180KG - Steel plate thickness: 22mm (0.9 inches) - Suitable for bar chairs, lounge chairs, etc. Features: 1. 360-degree rotation with double bearings for smooth and flexible movement, improved stability, and durability. 2. Designed to withstand significant pressure without deformation. 3. Long-lasting performance. 4. Full bead structure. 5. Versatile applications in home furniture, boat seating, and more. 6. Low noise operation with imported damping grease between steel balls. Package includes: 1x Swivel base mount. Note: 1. Please allow a 0.5-1cm difference due to manual measurement. 2. Color may vary slightly due to lighting and screen differences.