Back Home / Cutting Tools / Drill Bits / DRILL BIT-HEAVY DUTY JOBBER LENGTH, 1/2″ DRILL BIT-HEAVY DUTY JOBBER LENGTH, 1/2″ SKU: TID12 Categories: Cutting Tools, Drill Bits Diameter of 1/2″. Jobber length, 6″. 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 1/2″. Jobber length, 6″. 135° split point. Black oxide finish. Heavy duty construction. Recommended for portable drilling of low to medium Case Quantity: 6 Log In For Pricing