FEATURES The ZP319 Angle Die Grinder is ideal for high-speed grinding and polishing. 90 Air Angle Die Grinder-0.5HP. It can be used in finishing dies and metal molds, smoothing and shaping sheet metal or cast iron, weld finishing, and other high-speed polishing application. Can use with 1/4"(6mm) or 1/8" (3mm) grinding accessories. SPECIFICATIONS  Brand Name Zipp Air Tool USA Item model number ZP319K Collet Size 1/4" (6 mm) Net Weight 1.5 lbs (0.7 kgs) Length 7" (178 mm) RPM 18,000 Air Inlet Size 1/4" NPT/PT Min. Hose Size 3/8" (10mm) Avg. Air Consumption 3.7 Cfm