.1 hp Straight-Line Extension Pencil Grinder 60,000 RPM, Turbine Air Motor, Rear Exhaust, 1/8 Inch Collet Tool has integrated collet with 1/8 Inch Collet Insert (51659) Turbine-Driven Air Motor Models are ideal for precision deburring and finishing on a variety of surfacesHigh-efficiency air motor has no wearable gears, vanes or bladesOil-free operation minimizes maintenance time and repair costsAir motor is controlled with patented governor, providing constant tool speed under loadQuality high-speed bearings are included. Housing has non-slip rubber grip for additional controlTactile cues on shaft end alert operator to rotating collet area. Changing of attachment is achieved with easy, two-wrench maneuverIncludes high-quality flexible air hose. Teal Tool Cap for easy tool speed identification when using multiple modelsExtension Model provides additional reach. Part # 51750 Sold in qty's of 1 Air flow 42.0 Collet 1/8 Inch Exhaust type Rear Height 3-3/4 Inch Hose ID 3/8 Inch HP 1 Country of origin United States Product type Pencil Grinders RPM 60000