The Steelman 130K 3/8 in. Drive Air Ratchet Kit is a 16-piece set that contains the most commonly used sockets, adapters and accessories to both get you started working and keep you going strong. The lightweight yet sturdy 3/8 in. drive pneumatic wrench weights 2.75 lbs. and has a variable speed, lever-style throttle that provides smooth control with less hand fatigue. It's powerful motor delivers 50 ft./lbs. of torque and 150 RPM of free run speed while using 4 CFM of compressed air. Included in the kit is a 1/4 in. NPT threaded male coupler to get your tool hooked up to your existing air compressor. The included heavy-duty impact sockets are made of durable chrome-vanadium steel and are sized 3/8 in., 7/16 in., 1/2 in., 9/16 in., 5/8 in., 11/16 in. and 3/4 in. Additional accessories include a 3/8 in. drive 3 in. extension bar, a 3/4 in. x 1/4 in. bit driver, a 3/8 in. swivel adapter, 3 drill bits - PH2, PH3 and 5.5 mm slotted and a bottle of air tool oil. To keep all these tools organized and ready for the next job, the entire kit comes in a blow-molded plastic case.