EVA bottom surface, avoid record wear, balance pressure, absorb vibration. It keeps record label safe and weight distribution is centered nicely. The record stabilizer height is moderate, and the dustproof cover can be closed when playing to reduce the noise of the record. Universal disc pressure, reduce vibration, effectively improve the sound quality of the record. Vibration reduction and noise reduction,without affecting the speed. Top Diameter:70mm/2.76inch Bottom Diameter:76mm/2.99inch Height:29mm/1.14inch Net Weight:280g Motor: LP Disc Stabilizer Model Number: Record Stabilizer Output Connectors: USB Speeds: 33,45,78 RPM color:Black Material:aluminum Package Contents: 1 x Record Stabilizer Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.