B2834 Use for drilling and screwdriving. Two speed trigger (slow speed when pushed halfway). Directional lever accessible from both sides for left/right handed use. 10mm (3/8") chuck included. Planetary gears for longer life and smoother running. Ergonomic comfortable grip. Chuck size: 3/8" (10mm). Air consumption: 4cfm* (113ltr/min). Air inlet thread: 1/4" NPT. Spindle thread: 3/8" - 24. Minimum air hose size (ID): 3/8" (10mm). *Based on a 15 second cycle per minute average use.