??Offering A Variety Of Sizes?Our Heavy Duty Aluminum Turntable Ball Bearings Offer You A Variety Of Sizes: 10 Inch,,12 Inch, 14 Inch, 16 Inch, 18 Inch, 20 Inch. Please See Our Pictures For Our Swivel Bearings. | | ??Polished Ball Bearings?Bearing Balls Make Our Non-Slip Bearings Spin Smoothly. It Comes With Non-Slip Rubber Feet. You Can Remove The Rubber Feet And Screw Our Bearings Under Any Wood Or Metal Top Cover To Create A Great Rotating Platform. | | ??All Alloy Quality?We Use Heavy Duty Aluminum Alloy Material, Which Is Strong, Durable And Corrosion Resistant. Our Bearings Can Be Used In A Variety Of Applications, Including But Not Limited To Wood, Glass, Marble, Etc. | | ??Dust And Rust Resistant Swivel Guide?The Gap Between The Two Rings Is Exceptionally Tight, Making Our Bearings Excellent At Preventing Dust, Debris And Other Foreign Objects From Entering The Gap. (If Foreign Matter Enters And Causes Poor Sliding, Tap The Swivel Bearing Gently, Or Turn It Counterclo.