Straight (SX307B): 1/4 HP; 22.000 RPM; 97 dBA. Right Angle (SX301B): 1/4 HP; 28.000 RPM; 97 dBA. Contoured aluminum housing offers a secure grip. Variable speed throttle provides accurate control WARNING: This product can expose you to Nickel (Metallic) a chemical known to the State of California to cause Cancer. For more information go to www.P65Warnings.ca.gov.