Aluminum Alloy Record Weight Clamp Universal 50Hz LP Vinyl Turntables Metal Disc Stabilizer for Records Player Accessories Feature: An excellent record stabilizer for LP record players. It can prevent record shaking and reduce vibration and stabilize the speed. Ideal for maintaining stability and improving sound quality. In order to eliminate vibration, please stabilize the speed and maintain the horizontal position of the turntable. Realistic sound reproduction and lower noise bring you pure and outstanding music enjoyment. The spindle hole is suitable for a spindle with a diameter of 7mm, which is very suitable for most existing turntables. Built-in high-precision bubble level is used to test the weather, the working surface is on the level, and the rotation speed of the vinyl record is displayed. Specification: Item: Recording stabilizer Material: aluminum alloy Size: Top diameter: 65mm / 2.56in, bottom diameter: 78mm / 3.07in, hole shaft diameter: 7mm /0.28 inch Color: Silver, Gold, Black (optional) Frequency: 50Hz, 33 and 45 rpm speed sensing Function: 1. Used for recording stabilizer. 2. Test the speed of the recording player. 3. Test the level of record player, cabinet and speakers. Speed measurement method: First, press the record on the turntable, then turn on the turntable. After the recording player rotates, look down under the fluorescent light to see if the scale lines are clearly visible. If the scale points are uniform and clearly visible, without moving to the left or right, the speed is accurate. If it is blurred or connected to the part and moves from left to right, the speed is abnormal. This test method is for reference only. Note: Due to the different monitor and light effect, the actual color of the item might be slightly different from the color showed on the pictures. Thank you! Please allow 1-3mm measuring deviation due to manual measurement. Included: 1 X Turntable Stabilizer