Authentic Chicago Latrobe 21 pc. High-Speed Steel Jobber Length Drill Bit SetSizes: 1/16, 5/64, 3/32, 7/64, 1/8, 9/64, 5/32, 11/64, 3/16, 13/64, 7/32, 15/64, 1/4, 17/64, 9/32, 19/64, 5/16, 21/64, 11/32, 23/64 & 3/8Comes with metal caseFor wood and metal applicationHigh-speed steel provides hardness for wear resistanceBlack oxide finish reduces wear while promoting chip and coolant flow on ferrous materialsExtra thick web for increased strength and rigidity compared to standard drill bitsMade in the U.S.A.