1/2 in. Drive Quiet Air Ratchet Chicago Pneumatic's 7830HQ 1/2 in. Drive Quiet Air Ratchet features an adjustable side exhaust for low noise level and a patented Tri-Spring anti-slip head. Delivering up to 90 ft-lbs. of torque, this ratchet is one of the strongest tools in its class. Adjustable side exhaust for low noise operation Progressive tease throttle Grease fitting on the reverse button Sturdy aluminum alloy head for durability Patented TriSpring anti-slip head design with protective head cover 1/2 in. Drive Quiet Air Ratchet - 7830HQ 7830HQ