Carbide Bur End Type Flat Cut Type Double Shank Dia 1/4 in Head Dia 5/16 in Head Length 3/4 in Included Angle Not Applicable Overall Length 2 1/2 in Trade Number SA-2 Primary Material Application Brass Bronze Carbon Steel Cast Iron Stainless Steel Titanium Head Shape Cylinder Operating Speed - Maximum 68 000 RPM List Number 1845 System of Measurement Inch Coating Bright (Uncoated) Head Material Carbide Shank Material Hardened Steel