Features: brand new and high quality Level + speed beltA level can check whether the record player is levelThe speed tape is used to test whether the for LP is rotating properly. Anti-skid padsReduce friction between metal for LP vinyl and pressure disc without damaging the record Laser engraving strobe scale never fades, universal support 50Hz and 33rpm, show you the rotation speed of the for LP disc. Soft base pad assure for protection of the record label, offers sound damping (lessens unwanted vibration) and helps temporarily level vinyl surface. Universal disc pressure, reduce vibration, effectively improve the sound quality of the record. Speed measuring methodLevel instrument disc town function is to detect whether the turntable is smooth, some turntable speed is not smooth enough, the need for the disc press the record flat adjustment. The disc weight is placed on the record player to observe the bubble position. If the bubble is on the left side, it is on the high side and adjusted to the right. If the bubble is on the right side, it is on the right side and adjusted to the left; Then adjust the level again If the adjustment is not in place all the for time, the machine needs to be checked.The scale on for LP discs is used to measure speed. for LP discs are marked 50-33,50-45 (50Hz33 or 50HZ-45), such as 33 turn for LP disc, after the record turns, see whether the 50-33 scale line is clearly visible, if the speed is uniform and clearly visible, that the speed is normal, 33 turns per minute, if more fuzzy or into - - line, the speed is not correct. Specifications: Material:Aluminum Alloy Colour:Black,Silver Height:Approx.41mm/1.61in Bottom Diameter:Approx.53mm/2.09in Hole Diameter:Approx.7mm/0.28in Net Weight:400g Note: Please allow 1mm errors due to manual measurement. Due to the difference between different monitors, the picture may not reflect the actual color of the item. Package includes: 1x Record Stabilizer