Back Home / Cutting Tools / Drill Bits / DRILL BIT-HEAVY DUTY JOBBER LENGTH, 31/64″ DRILL BIT-HEAVY DUTY JOBBER LENGTH, 31/64″ SKU: TID3164 Categories: Cutting Tools, Drill Bits Diameter of 31/64″. Jobber length, 5-7/8″. 135° split point. Black oxide finish. Heavy duty construction. Recommended for portable drilling of low to medium carbon steels, cast iron and wood. Diameter of 31/64″. Jobber length, 5-7/8″. 135° split point. Black oxide finish. Heavy duty construction. Recommended for portable drilling of low to m Case Quantity: 6 Log In For Pricing