Features The high-speed steel jobber-length drill bits in these sets provide more flexibility and absorb more shock and vibration than cobalt and carbide jobber-length drill bits, making them suitable for use in manual drilling machines and handheld power tools. They may leave a rough finish on the hole. These sets contain multiple drill bits of various sizes. Material - Machining / High Speed Steel Finish - Machining / Black & Gold Measurement System / Fractional Inch Number of Drill Bits / 29 Drill Bit Sizes Included / 1/16 in, 1/2 in, 1/4 in, 1/8 in, 11/32 in, 13/32 in, 15/32 in, 3/16 in, 3/32 in, 3/8 in, 5/16 in, 5/32 in, 7/16 in, 7/32 in, 1/16 in, 1/2 in, 1/4 in, 1/8 in, 11/32 in, 13/32 in, 15/32 in, 3/16 in, 3/32 in, 3/8 in, 5/16 in, 5/32 in, 7/16 in, 7/32 in Drill Bit Point Angle / 135 Degrees Drill Bit Point Type / Split Point Cutting Direction / Right Hand Drill Bit Grouping / Set Drill Length Class / Jobber Length Shank Type - Machining / Straight Shank Dia. / 1/16 in to 1/2 in Includes / Metal Drill Index Standards / Not Rated Aircraft Drill / No Coolant Fed / Non-Coolant Through Material Grade - Machining / Heavy Duty Primary Material Application / All Materials Drill Bit Size / 1/16 in -1/2 in by 1/64 in Largest Drill Bit Size / 1/2 in Smallest Drill Bit Size / 1/16 in