Stop Collar Set
$20
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On orders over $49 within the contiguous USA.
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If this isn't one of the best tools you have ever owned simply return it for a full refund within 60 days of purchase.
- Precise and consistent results, prevent over / under drilling, ideal for repeated hole depths
- Quick and easy adjustment at any point on drill bit flutes / shafts
- Split ring collar has 5x holding power vs. standard set screw design
- Durable, lightweight aluminum for superior performance over steel
- Universal sizes: 1/2", 7/16”, 3/8”, 5/16”, 1/4”, 7/32”, 3/16”, 1/8”
What's Included
- Stop Collars: 1/2", 7/16”, 3/8”, 5/16”, 1/4”, 7/32”, 3/16”, 1/8”
- Allen Wrench
Specifications
Brochure
Click to download:
Prevent over / under drilling

Description
Superior split ring design made from durable, lightweight aluminum for easier use. 5x holding power vs. set screw design. Maintain precise and consistent hole depths and prevent over / under drilling mistakes. Quick and easy adjustment at any point on drill bit flutes / shafts. Fits twist and brad point drill bits for wood, metal, concrete / masonry. 8 piece set includes Allen wrench and one stop collar in each of the following sizes: 1/2″, 7/16”, 3/8”, 5/16”, 1/4”, 7/32”, 3/16”, 1/8”
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4.76 out of 5 stars
37 reviews
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What others are saying
Doug (verified owner) –
These stops are well made, and they tighten down very tight.
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Jason Ray (verified owner) –
I have had multiple issues with different drill bit stop collars from other places, including some expensive ones. This set is clearly labeled, easy to adjust, and is rock solid in use. Highly recommended.
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Patricia J. Wesley (verified owner) –
Good quality.
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Steven Greenberg (verified owner) –
I’m an amateur homeowner. I purchased a lower priced doweling set that came with drill bit stops. They attach to the drill bit with a set screw that are difficult to set accurately and easy to dislodge. The collar type is easier to set up and stays where you place it. They arrived quickly and have a nice selection of sizes. I am happy with the purchase.
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William Durham (verified owner) –
Once you tighten these onto a drill bit, good luck taking them off or adjusting them. When you tighten the set screw the ring clamps down on the drill bit. When you loosen the set screw, the ring stays tight right where it is. You nearly have to damage the ring to adjust it or to remove it.I personally would not recommend this item.
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