CP2005 Chicago Pneumatic Shut-Off Screwdriver The CP2005 Chicago Pneumatic Shut-Off Screwdriver was designed to be the most robust and durable pistol and is known to be the ”Quiet Version” at only 80dB(A). The CP2005 Chicago Pneumatic Shut-Off Screwdriver features a robust aluminum body which is helpful even for heavy duty applications and a progressive trigger that conveniently has a single handed forward/reverse operation. The CP2005 Chicago Pneumatic Shut-Off Screwdriver features an accurate and reliable clutch and the ergonomic handling gives the operator maximum comfort.