Tree Bur SG End Type Pointed Cut Type Double Shank Dia 1/4 in Head Dia 1/4 in Head Length 1/2 in Included Angle Not Applicable Overall Length 6 1/2 in Trade Number SG-1L6 Primary Material Application Brass Bronze Carbon Steel Cast Iron Copper Stainless Steel Titanium Head Shape Tree Operating Speed - Maximum 70 000 RPM Coating Bright (Uncoated) Head Material Carbide Shank Material Steel