1/4 in, Head Dia.
.Carbide Bur,Pointed Tree,3/8,1/4 Shank 3/8 in, Head Length 3/4 in, Included Angle Not Applicable, Overall Length 2 1/2 in, Trade Number SG-3, Primary Material Application Brass, Bronze, Carbon Steel, Cast Iron, Copper, Stainless Steel, Steel, Titanium, Head Shape Tree, Operating Speed - Maximum 60,000 RPM, List Number 310G, System of Measurement Inch, Coating Bright (Uncoated), Head Material Carbide, Head Material Grade C2 Submicron, Shank Material Steel Carbide Bur, End Type Pointed, Cut Type Double, Shank Dia.