3/8 in, Length of Cut 3/4 in, Overall Length 6-3/4 in, Trade Number SC-3L6, Abrading Application Metalworking, Milling, Contouring, Hard-to-Reach Areas, Coating Bright (Uncoated), End Type Radius End, Head Material Carbide Carbide Bur,Radius End,3/8 In,1/4 Shank.1/4 in, Head Dia.