Functional and Easy-to-Use Sound ImprovementVinyl sound can be significantly improved - you just need to get rid of the unwanted resonances between record and platter. Clamp It is the real solution: an accessory with a clamp mechanism around the center spindle that will not add weight which would induce rumble. You can fine-adjust pressure according condition of your warped records. Fitting the Clamp It onto your records is as easy as 1 2 3. This accessory will not only please your ears but its beautifully-machined diamond-cut edges will also look extremely cool on any turntable!What's in the BoxClamp It Aluminum Record ClampSpecificationsMaterial: Aluminum with leather coatingDiameter: 78mmHeight: 33mmWeight: 120g