Straight heart 3 inch small pneumatic locking sanding disc sanding machine elbow right angle sanding machine polishing machine WM-1111 Category: Pneumatic Sanding Wheel Grinder Model:WM-1111 Speed:15000 RPM Tray Thread:M6 Average Air Consumption:3 CFM (84L/MIN) Net Weight:0.45 kg Length:109 mm Air Pressure: 90 psi Air Inlet:1/4 Tube I.D.: 10 mm Exhaust system: Rear exhaust