Dynafile II Abrasive Belt Tool .5 hp, 7 Degree Offset, 20,000 RPM, Front Exhaust, 1/4 Inch-3/4 Inch W x 20-1/2 Inch L (6-19 mm x 521 mm) Belts Grind, deburr, blend and polish, on metal, plastic, fiberglass, composites, rubber, glass and moreGrind from contact wheel or platen pad finish and polish using slack of belt. Lightweight, ergonomic 7 degree offset designGrinding head pivots 360 degrees for securing in most efficient position. Belt guard easily detaches for quick abrasive change simple belt tracking adjustment knob. Kit includes 11287 Contact Arm for 5/8 Inch or 3/4 Inch wide abrasive elts(11287 is only arm that accepts 20-1/2 Inch long belts.) Product Information Brand Dynabrade Part # 40326 Exhaust Type Front Height 4-7/8 Inch Hose ID 3/8 Inch HP 0.5 Product Type Belt Sanders RPM 20000