Master Palm® Pneumatic.3/8" Keyed Chuck right Angle Drill Attachment Long extended Shaft Adapter with 8mm Hex Shank for pneumatic air screwdriver This is a high quality right angle drill attachment with max. 3/8" chuck and 8mm hex shank, which makes it suits almost all standard drills. It can make drill power swerve 90°and get to hard-reached places. 8mm hex shank, suits most standard drills, such as hand/power drills, electric drill, buffing attachments with 50ft/lb torque. Simple to install..