Luejnbogty Item Type: LP Vinyl Pickup Calibration Material: Acrylic color: white Thickness: 2mm/0.07in Speeds: 33,45,78 RPM Model Number: Calibration Plate Output Connectors: RCA Stylus Type: other Motor: None Dimensions (W x H x D): 295mm/11.6in Diameter Package Contents: 1 * LP Vinyl Pickup Calibration Only the above package content, other products are not included. Note: Light and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.