Taper Length Cutting Edge Material HSSCoPM 1/4-E RHS / RHC HSS-CO 8% (M42) 118 Degree Notched Point Cobalt Heavy Duty Taper Length Drill - Straw / Gold Oxide Cleveland List 2513 Cobalt Heavy-Duty Taper Length Drills Tool Diameter 1/4 inch|E O.A.Length 6-1/8 inch Measurement Type Letter|Fractional Decimal Equivalent 0.2500 inch Coating Straw-Gold Oxide Shank Type Round Cleveland