Multiple Sizes Optional - Heavy duty aluminum alloy rotating bearing with multiple sizes to choose from: 10/15/20/10 inch (optional).It is thick and greatly improves the load carrying capacity.High quality material: Made of sturdy aluminum alloy, strong and durable, resistant to corrosion and rust.You can choose the top material like wood, glass, marble to match your interior style.Non-slip rubber feet equipped with non-slip rubber feet and convenient to use.These bearings can be screwed in or clamped in as they have through holes and pre-drilled holes.Easy to install, no installation required.Attention: Ball bearings use rolling elements to maintain separation between moving parts to reduce rotational friction and support radial and axial loads, and sealed bearings are lubricated with oil, so youshould with periodic reapplication of lubrication, depending on usage.Wide applications: can be used for tables, corner cabinets, storage solutions, dinner service, magazine racks, TV and computer monitor decks, floral arrangements, home decorcakes and trade show exhibitions.