- 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
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- Calculated at Checkout