2 in 1 Record Aluminum Stabilizer & 45 Adapter 

Shockproof, Reduces resonance & vibration, and improves sound quality. This is designed to enhance the stability and reduce resonance of uneven records and is a well-trusted vinyl playback aid. Increases the connection between vinyl and platter producing more consistent sound. Also doubles as a 45 adapter to use with 12 inch and 7 inch records with large holes. 

Actual weight of this stabilizer is 1 lb 0.2 oz