This is a record stabilizer for LP record players. It can prevent the record from shaking and reduce vibration at a stable speed. Perfect for maintaining stability and improving sound quality. To eliminate vibrations, please stabilize the speed and maintain the horizontal position of the turntable. Realistic sound reproduction and lower noise give you pure and outstanding music enjoyment. The spindle hole is suitable for a spindle with a diameter of 7 mm, which is very suitable for most existing record players. The built-in high-precision level is used to test the weather, the work surface is level, and it shows you the rotation speed of the vinyl record. LP recording stabilizer only, excluding other accessory demonstrations in the picture. Used to record stabilizer. Test the speed of the recording player. Test the level of the turntable, cabinet, and speakers. Color: black Material: Aluminum alloy size: Hole shaft diameter: 7 mm/0.28 inch Maximum diameter: 76 mm / 2.99 inch Height: 34 mm/1.34 inch Package contents: 1 x 50Hz LP record stabilizer Only the above package content, others are not included. Note: Light reflection and different displays may cause the color of the item in the picture to be a little different from the real thing. The allowed measurement error is +/- 1-3 cm.