1Silent handle exhaust runs quietly and guides exhaust away from work and users 2Including 3/8in chuck and key, full equipped and easy to use 3Convenient one finger forward/backward operation to maximize work efficiency 4Using high-quality materials, strong and durable, has a long service life 5Wide range of applications, suitable for drilling and industrial etc.Item Type: 3/8inch Reversible Air DrillInlet Thread Size (NPTF): 1/4 Average Air Consumption (CFM): 4 Chuck Size (inch): Approx. 3/8 Idle (RPM): 1800 Length (inches): Approx. 7.6 Minimum Hose Size (Inner Diameter): Approx. 3/8 inches Sound Level (dBA): 83.3 Spindle Size (inches): Approx. 3/8-241 x 3/8inch Reversible Air Drill1 x User Manual1 x Chuck Key1 x Connector