Screw Machine Drill Set, Type Standard, List Number 159, Number of Pieces 29, Grade Heavy Duty, Material High Speed Steel, Finish Black Oxide, Point Type Split Point, Drill Point (Deg.) 135, Fractional Size (In.) 1/16 To 1/2 By 64ths, Application For Alloy, Carbon And Tool Steels And Cast Iron, Meets/Exceeds National Aerospace Standards (NAS) 907, Type C, Sizes Included 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, 3/8, 25/64, 13/32, 27/64, 7/16, 29/64, 15/32, 31/64 And 1/2" With Metal Case, Package Quantity 1Features - Material - High Speed Steel Finish - Black Oxide Point Type - Split Point Drill Point (Deg.) - 135 Fractional Size (In.) - 1/16 To 1/2 By 64ths Application - For Alloy, Carbon And Tool Steels And Cast Iron Meets/Exceeds - National Aerospace Standards (NAS) 907, Type C Sizes Included - 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, 3/8, 25/64, 13/32, 27/64, 7/16, 29/64, 15/32, 31/64 And 1/2" With Metal Case Package Quantity - 1WARNING: California Residents This product can expose you to chemicals including Styrene, which is known to the State of California to cause cancer and birth defects or other reproductive harm.California proposition 65 warning