Tree Bur SG End Type Pointed Cut Type Double Shank Dia 1/4 in Head Dia 1/2 in Head Length 3/4 in Included Angle Not Applicable Overall Length 2 1/2 in Trade Number SG-13 Primary Material Application Brass Bronze Carbon Steel Cast Iron Copper Stainless Steel Titanium Head Shape Tree Operating Speed - Maximum 50 000 RPM Coating Bright (Uncoated) Head Material Carbide Shank Material Steel