Features The pneumatic drill is made of selected advanced steel, precision processed by advanced CNC machine tools. The body has its own speed control and front and rear functions, convenient operation and high work efficiency. The main shaft, gears and bearings are perfectly suited, the rotation is stable, the torsion is strong, and the service life is long. Powerful power, lightweight body, front and rear adjustment, 360 degree exhaust, good hand feeling, solid bearing design. With hardened alloy reducer, stable and wear-resistant, strong torsion output. Specification: Item Type: Air Drill Material: alloy steel. Model No.:KP-550 Chuck size: 3/8 inch Clamping capacity: 1.5-10mm Free speed: 2000 rpm Working pressure: 0.6-0.8MPA Input connector: 1/4 inch. Package list: 1 x Air Drill. 1 x key. 1 x user manual (English language not 1 x connector Package List 1 x Pneumatic Drill 1 x Wrench 1 x User Manual 1 x Connector