Self-starting Stepped Drill Set use for starting, making and enlarging holes in metal materials example steel, copper, brass, aluminium and other thin materials. Stepped Drill Bits are hardened to HRC 62.

  • 13 Sizes: 1/8", 5/32", 3/16", 7/32", 1/4", 9/32", 5/16", 11/32", 3/8", 13/32", 7/16", 15/32", 1/2" (3 to 13mm).
  • Length: 3.1/4" (82mm).
Barcode # 9322159689716