Powerful .45 HP motor delivers up to 18,000 RPM.Power source: Pneumatic.Weighs less than 1.5 lbs. for versatility and ease of use in tight spaces.Balanced motor and comfortable molded pistol-style grip decrease vibration and noise.Variable speed control at the trigger increases operator precision for less rework.Excellent for use with 3M Cubitron II Fibre Roloc 2″ and 3″ discs.Use with Roloc Disc Assemblies: 2″ 853111 (05539) or 3″ 853110 (05540).