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7-Pc. Split Collar Set Zoom

7-Pc. Split Collar Set

Item #: 68946
Split-ring stop collars clamp around drill bits and hold securely in place. When tightened, they clamp over the complete diameter of the drill bit shaft without marring.
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$12.99
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Overview

Split-ring stop collars clamp around drill bits and hold securely in place. When tightened, they clamp over the complete diameter of the drill bit shaft without marring. The set includes collars for 1/8", 3/16", 1/4", 5/16", 3/8", 7/16" and 1/2" size bits. A 3mm (1/9") hex key for adjustments is also included with the set. Select the proper collar diameter, slide it onto the drill bit, and tighten the single 3mm hex screw. The split ring design tightens fully around the drill bit securing it in place. No damage to the drill's side edges or flutes will occur! Stop Collars allow you to set precise cutting depths on any countersink or drill bit with a corresponding diameter.

What's included

(1) 1/8" Collar
(1) 3/16" Collar
(1) 1/4" Collar
(1) 5/16" Collar
(1) 3/8" Collar
(1) 7/16" Collar
(1) 1/2" Collar
(1) Pack Collar Screws
(1) 3mm (1/9") Hex Key

Technical Details

  • Brand: Insty-Bit
  • Manufacturer Part Number: 72001-31
  • Weight (lbs): 0.4000

Frequently Bought Together

Questions and Answers

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Browse 1 question Browse 1 question and 49 answers
Why did you choose this?
Rockler Store
Myself
Jammy H on Aug 18, 2017
As a retired machinist I know that split collar stops ar e far better than just set screws.
VEZETTER W on Jul 26, 2017
Myself
Jammy H on Aug 18, 2017
Need to set accurate drill depths without marring the wood
Lloyd L on Aug 2, 2017
As a retired machinist I know that split collar stops ar e far better than just set screws.
VEZETTER W on Jul 26, 2017
gauge depth of holes
GLENN S on Jun 22, 2017
Need something to help control the depth of the holes I drill.
John L on Jun 16, 2017
Wanted a quality set of collars
Phillip B on Apr 18, 2017
Split collars work so much better and slip less than the set-screw type.
Gary K on Apr 14, 2017
works well if tightened on bit enough. I took a small length of aluminum tube to cover the bit between the chuck and the stop to keep the collar from walking up the bit (great help)
Thonas C on Mar 9, 2017
Adjustable Depth stops for multiple diameter bits helps keeps uniform production with ease
Eric M on Feb 19, 2017
I'm working on a workbench w/ a lot of dowel holes to drill
Kevin W on Feb 15, 2017
my slip
micah r on Feb 9, 2017
Product badly marks the wood
David M on Dec 26, 2016
To repeat the depth
Steve H on Dec 25, 2016
I need it.
Michael N on Dec 23, 2016
for my drill press and hand drill
kelly L on Nov 30, 2016
to adjust depth of drill
MICHAEL K on Nov 23, 2016
I needed it.
David S on Nov 18, 2016
work OK
Michael G on Nov 3, 2016
I want to set up a dedicated index of stop-collared bits for drilling the shelf standard holes in the shelf carcass sides.
Alfetta159 on Sep 13, 2016
Easy to use
Edward B on Jul 9, 2016
to eliminate my mistakes
Richard S on Jul 7, 2016
control dowelling depth
Victor P on Jul 6, 2016
aid in drilling holes
charles r on Jun 28, 2016
to support doweling kit for multiple dowel holes at same depth
Richard W on May 25, 2016
set depth on drill bits
James F on May 20, 2016
Reviews were not great, but I needed something to safely drill shelf pin holes in an already built entertainment center I am modifying.
Ron S on May 15, 2016
Some of mine are broken
Frank Z on May 7, 2016
for depth drilling control.
Vincent O on Apr 23, 2016
When using dowells it is guess work how deep to drill. Now I can get it right every time.
Richard W on Mar 6, 2016
I needed a complete set of collars
Shirley V on Mar 5, 2016
To drill holes of a consistant depth.
James D on Feb 23, 2016
This is something that I have always needed
David W on Feb 21, 2016
These will keep the depth correct when drilling holes for the dowels
marvin d on Jan 5, 2016
For doweling.
Joe R on Jan 1, 2016
Easy storage and neater hole drilling
Louis M on Dec 26, 2015
general use
Mark R on Dec 13, 2015
i had a set before i let someone use
never returned
russell g on Dec 8, 2015
to go with doweling kit
Harry S on Nov 24, 2015
on my husband's wish list
Martha R on Nov 23, 2015
Better than using tape on the bits
Erling Y on Oct 18, 2015
Need to stop drilling too deep
Paul K on Oct 17, 2015
Flexible depth stop for my drilling needs
BOB L on Aug 12, 2015
Have some that are not split, don't woork very well. Hope these are better.
James C H on Aug 2, 2015
Split collar clamps squarely on the bit
Hermann A on Jun 11, 2015
Looks like the best design compared to other Stop Collars
Kevin M on Jun 2, 2015
Have some holes to drill just shy of the opposite face, Need to set the depth very carefully.
Richard E on May 27, 2015
I chose the 7-Pc Split Collar SET to increase the accuracy & repeatability of drilling depth.
Efrain C on May 23, 2015
I am familiar with rockler products and I am very happy with the quality of the products.
James M on May 21, 2015
Wanted this item for awhile.
Donald F on Apr 29, 2015
Need to set accurate drill depths without marring the wood
Lloyd L on Aug 2, 2017
gauge depth of holes
GLENN S on Jun 22, 2017

Reviews

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2.7 / 5.0
30 Reviews
5 Stars
4 Stars
3 Stars
2 Stars
1 Stars
6
6
4
2
12
They split in half
Bought these collars awhile ago along with the brad point bits and the doweling jig , 1/4",3/8", and 1/2". Did not use the collars until last October, when I was going to use the 1/4" collar to set the depth for shelf pins on some built-in bookcases I was building. When I went to tighten it down it broke in half. I figured I had done something wrong, but the same thing happened when I tried to use the 3/8" collar the same thing happened. It broke in half just the same as the 1/4" collar. I'm very disappointed and it was a waste of money. I would not recommend this to anyone.
June 11, 2014
Theses drill collars are great. Makes drilling a hole to a precise depth a breeze
February 21, 2016
Purchased
 1 year ago
For my purposes 'perfect'!
I bought a set of these for drilling dowel holes. They are on a dedicated set of bits, 'permanently' set to just over 1/2 the depth of the dowel length. That way they are always ready to go, and I don't have to constantly 'open and close' the collars. They work great!
May 4, 2015
Woodworking Experience:
Advanced
Drill Stops
Work well but don't apply to much pressure or they may slip.
Best with a hand drill, Caution with a drill press.
August 18, 2015
Purchased
 over 2 years ago
Woodworking Experience:
Advanced
Easy to use and effective.
December 19, 2015
Purchased
 1 year ago
Woodworking Experience:
Advanced
The collars don't work all that...
The collars don't work all that well. Each collar is very hard and stiff. You could not squeeze them closed with a pair of vice grips. So do not think you will tighten them down a size with that allen wrench. Each collar will basically only fit a single size of drill bit. You could almost call this a drill bit conversion kit. Once you get them on, they work well. They are simply not as flexible as you would think.
May 22, 2008
Excellent
Easy to install and gives a uniform depth so it removes all the guess work out of counter sinking. My accuracy and speed increased ten fold.
August 11, 2016
Purchased
 1 year ago
Woodworking Experience:
Advanced
Working well so far
It appears to be doing what it was supposed to do.
January 23, 2017
Purchased
 7 months ago
Woodworking Experience:
Beginner
Sturdy set
With the split ring design, the collars lock down well. Almost four hundred hole on the last job with zero slippage or failure.
May 12, 2017
Purchased
 3 months ago
Woodworking Experience:
Advanced
Great little stops
Bedst type of stops I have found and used. And i have tried everything I have came across.
March 28, 2017
Purchased
 5 months ago
Woodworking Experience:
Advanced

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