Audio Technica AT618a 21oz Turntable Platter Disc Stabilizer Brass (Black)Audio Technica AT618a 21oz Disc Stabilizer The AT618a disc stabilizer fits over the turntable spindle to hold records firmly in place, reducing resonance and improving sound quality. The stabilizer is constructed of machined brass with a protective rubber cover. Product Features Holds record firmly in place for reduced resonance and improved sound quality Machined brass housing with protective rubber cover 600 g (21. 2 oz)