Item Description:

  • Includes collar sizes from 1/8", 3/16", 1/4", 5/16", 3/8", 7/16", 1/2" (Bit not included)
  • Adjustable collars make setting drilling depths fast, easy and accurate
  • Slip the collar onto the drill bit and tighten the set screw to allow you to drill holes to exact depth without guess work
  • precision machined and balanced from solid bar stock
  • Reamed bore is closed-tolerance controlled