B3456 Use for grinding, polishing, buffing and deburring. Reversible hardened steel 1/4" collet. Short body length allowing access into hard to reach areas. Planetary gears for longer life and smoother running. Low profile teasing throttle for precise speed control. Rotating air inlet to prevent the air hose tangling. Specifications: Drive size: 1/4" (6mm), 1/8" (3mm). Free speed: 25,000rpm. Air pressure: 6.2Bar (90PSI). Air consumption: 4CFM* (113ltr/min). Air inlet thread: 1/4" NPT. Minimum air hose size (ID): 10mm (3/8"). Noise level: 91dBA. Sound power level: 98dBA. Vibration level#: 4.53m/s2. Overall length: 160mm. Weight: 0.6kg. ? Per Pneurop Standards EN 12366. # Per EN 28927-1. *Based on a 15 second cycle per minute average use