Model: CA-DC Gear Ratio: 1:1 Maximum Motor Speed: 40,000 rpm Total Length: 94 mm Head Height: 13.3 mm Head Diameter: 9.5 mm Weight: 67 g (2.36 oz.) Ion Plating Treatment: Yes Spray Holes: 1 Chuck: Push Button Acceptable Burs (ISO 1791): Shaft Type 1 CA Connections: ISO 11498 and ISO 3964 connections