3M Grinder 28403, T27, 4 in, 3/8 in-24 EXT, 1 hp, 12,000 RPMGeneral Information Brand 3M Equipment Type Grinder Power Type Pneumatic Product Type Right Angle Grinder Country Of Origin United States Sold As Case Lead Time 2 days California Residents Proposition 65 Warning Dimensions and Specifications Maximum Speed 12000 rpm Net Weight (Imperial) 4. 01 lb Net Weight (Metric) 1. 82 kg Overall Diameter (Imperial) 4 in Overall Diameter (Metric) 101. 6 mm Overall Height (Imperial) 4. 63 in Overall Height (Metric)