1,It is made by material of aluminum, so it is durable, safe and has a prolonged service life. 2,It can minimize the eccentricity of the big hole record and makes the big hole record turn more stable. 3,With the record turntable adapter, the work of the tone arm (pickup arm) is more stable, and the pitch swing is reduced. 4,The advantages of the record turntable adapter ensure that the big hole record can be played smoothly and high sound quality. 5,The record turntable adapter has wide compatibility and is suitable for most large-hole records. 1 x Record Turntable Adapter Item Type: Record Turntable Adapter Material: All AluminumDiameter: Approx. 38mm/ 1.5inHeight: Approx. 8mm/ 0.3in Note: Due to the light and screen setting difference, the item's color may be slightly different from the pictures. Please allow slight dimension difference due to different manual measurement.