1/4 in, Head Dia.
.Carbide Bur, 1849 SG-3L6 CLE-SG Pointed Tree Bur Standard Cut 3/8"x1/4" Hardened Steel Shank 3/8 in, Head Length 3/4 in, Included Angle Not Applicable, Overall Length 6 3/4 in, Trade Number SG-3L6, Primary Material Application Cast Iron, Ferrous Metals, Non-Ferrous Metals, Steel, Head Shape Tree, Operating Speed - Maximum 66,000 RPM, Coating Bright (Uncoated), Head Material Carbide, Shank Material Steel Tree Bur SG, End Type Pointed, Cut Type Single, Shank Dia.