This drill features a 3/8" chuck size with a keyed chuck key type, and a maximum speed of 3000 RPM.

Brand: Chicago Pneumatic
Accessories: 3/8in. Chuck
Chuck Size: 3/8in.
Type: Pistol Grip (Standard)
Warranty: No Warranty
Chuck Key Type: Keyed
Maximum Speed(RPM): 3000
Features: Variable Speed Trigger