Milwaukee 5194 Specifications:, Volts: 120V, Amps: 4, 5, Collet Dia, : 1/8"" - 1/4"", No Load RPM: 21,000, Length: 13-1/2"", Milwaukee 5194 Features:, Tool only, On-Off Paddle Switch, Heavy-Duty Aluminum Gear Cases, Heavy-Duty MILWAUKEE Built Motors, Nylon Motor Housings and Handles, Strong, Lightweight, Glass Reinforced, Long Life Brush System, High Efficiency Fans, For Mounted Wheels and Points Up To 1-5/8"" , Reinforced Wheels Up To 2"", All Ball and Roller Bearings, Armature Dynamically Balanced For Smooth, Efficient Operation, SKU: ORSNO64526