Compact, lightweight design for easy maneuverability. Lock off throttle to prevent accidental start up. Complete with 1/4 and 6mm collet. Built in regulator to match speed to the job Applications: high speed blending, smoothing, porting and deburring in confined areas.. Free speed: 28000 rpm. Model 876 collet/ spindle. Size: 1/4 - 6mm. Avg. air consumption: 4 CFM. Air inlet NPTF: 1/4. Min. hose size: 3/8 - 10mm