Back Home / Cutting Tools / Drill Bits / DRILL BIT-HEAVY DUTY JOBBER LENGTH, 1/4″ DRILL BIT-HEAVY DUTY JOBBER LENGTH, 1/4″ SKU: TID14 Categories: Cutting Tools, Drill Bits Diameter of 1/4″. Jobber length, 4″. 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 1/4″. Jobber length, 4″. 135° split point. Black oxide finish. Heavy duty construction. Recommended for portable drilling of low to medium Case Quantity: 12 Log In For Pricing