Features: brand new and high quality Adopting heavy duty aluminium alloy material, solid, durable and corrosion resistant. Smooth surface and beautiful, easy to clean. Easy to set up, no installation is required. These bearings can be screwed or fixed as they have through holes and pre-drilled holes. for Ideal for cake decorations, TV monitor stand, electronic repair, sculpture base, catering services, food display, serving. Package Includes: 1 x Table Bearing Specifications: Material: Aluminum Alloy 12 Inner Diameter: Approx. 24.5cm/9.65inch 12 Outer Diameter: Approx. 30cm/11.81inch 5 Inner Diameter: Approx. 8.5cm/3.35inch 5 Outer Diameter: Approx. 14cm/5.51inch 8 Inner Diameter: Approx. 14.5cm/5.7inch 8 Outer Diameter: Approx. 20cm/7.87inch 10 Inner Diameter: Approx. 19.5cm/7.68inch 10 Outer Diameter: Approx. 25cm/9.84inch Thickness: Approx.8.5mm note: 1.Please allow 1-2cm errors due to manual measurement, make sure that you do not mind before you order. 2.Due to the difference between different monitors, the picture may not reflect the actual color of the item.