Spiral Variable Multi Step Down Drill Bit Unibit Tool Uni Stepped Colbalt Set

In stock
SKU: STA-31014
Regular price $91.99
  • Cobalt steel bits provide longer life and cut faster than high speed steel
  • Two spiral flutes, automatically will de-burr the edge as you drill and provides better chip removal
  • Tri-flat shank for sure grip
  • 135 degree split point, self centering
  • Case included
  • Set Contains:
  • 1/4" shank:
    • 3/16" to 1/2"
    • 6 steps (3/16", 1/4", 5/16", 3/8". 7/16", 1/2")
    • 1/8" to 1/2"
    • 13 steps (1/8", 5/32", 3/16", 7/32", 1/4", 9/32", 5/16", 11/32", 3/8", 13/32", 3/8", 13/32", 7/16", 15/32", 1/2")
  • 3/8" shank:
    • 1/4" to 3/4"
    • 9 steps (1/4", 5/16", 3/8", 7/16", 1/2", 9/16", 5/8", 11/16", 3/4")
    • 1/4" to 1-3/8"
    • 10 steps (1/4", 3/8", 1/2", 5/8", 3/4", 7/8", 1", 1-1/8", 1-1/4", 1-3/8")
    • 3/16" to 7/8"
    • 12 steps (3/16", 1/4", 5/16", 3/8", 7/16", 1/2", 9/16", 5/8", 11/16", 3/4", 13/16", 7/8")