The HOLGER CLASEN's SD40/...PR series pneumatic screw drivers have a slip clutch, engaged pistol grip, and are started by a valve button and push-to-start. They feature a standard chuck, torque range from 4.5 to 22 Nm, rotation speeds from 450 to 1,600 min-1, therefore offering short tightening cycles. The can operate without lubricated air delivery, and can be used for various applications. They are highly durable, robust and reliable.