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7-Pc. Split Collar Set

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.
Item #
68946
Rating:
70% of 100
(63)

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.

(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
More Information
Brand Insty-Bit
Manufacturer Part Number 72001-31
Weight 0.4000
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3.5 / 5.0
63 Reviews
5 Stars
4 Stars
3 Stars
2 Stars
1 Star
27
11
7
4
14
Split collar depth gauges
Easy to set and lock to my bitd. Then it all woks just fine as a depth guage set
May 25, 2020
Purchased
 9 months ago
Woodworking Experience:
Intermediate
Can't believe I did not purchase a set years ago. Much better than tape. Easier on the drills than collars with set screws.
May 2, 2020
Purchased
 2 months ago
Woodworking Experience:
Advanced
7-Piece Split Collar Set
An excellent buy. It much superior to my older set that had a set screw. it was less accurate and would fall out if you took the set screw out too far. This one grips the entire bit and holds fast to the bit.
February 29, 2020
Purchased
 4 months ago
Woodworking Experience:
Intermediate
Good quality for the price
February 14, 2020
Purchased
 4 months ago
Woodworking Experience:
Intermediate
7pc split collar set
exactly what i needed. they fit the bits perfectly.
January 20, 2020
Purchased
 5 months ago
Great tool set
These stop collars have allowed me to make multiple holes and have stopped the drill to the exact depth I need. My only complaint is that I wish Rockler would make many of their small sets of tools with small cases or pouches, to help keep them organized and in a safe place..
December 28, 2019
Purchased
 10 months ago
Woodworking Experience:
Intermediate
Drill bit stop set
I like these as they pinch the drill bit rather then rely on a set screw into the side of the bit.
August 28, 2019
Purchased
 9 months ago
Woodworking Experience:
Intermediate
You're going to need pliers, but they work.
I came to look at the reviews _after_ I bought them and got them home - brilliant, huh? - because I couldn't get it to actually grab. I'd tighten it as far as I could by hand, and it'd just slip right off.

But, I saw all the reviews saying you really had to crank them down, so I put the short arm of the hex wrench in place and turned it with some pliers. Eventually, it grabbed.

So, unless your hands are a -lot- stronger than mine, you'll need pliers, and it'll feel like you might break something, but once it grabs, it grabs.
August 15, 2019
Woodworking Experience:
Intermediate
Split Drill Bit Collar Set
Split collars are much better than the standard set screw collars because they don't damage the bit flutes as set screws do and can be easily adjusted to any depth. It is a great design.
August 7, 2019
Purchased
 10 months ago
Woodworking Experience:
Intermediate
Another good choice
Never owned a set before. Much more accurate than blue tape
and more convenient a block of wood slipped over the bit.
July 21, 2019
Purchased
 11 months ago
Woodworking Experience:
Intermediate
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Browse 2 questions Browse 2 questions and 52 answers
Why did you choose this?
Rockler Store
Because I like it better than using tape!!
Rick on May 25, 2020
Need it
Ron W on May 6, 2020
Because I like it better than using tape!!
Rick on May 25, 2020
Need a second set
Rex G on May 8, 2020
Need it
Ron W on May 6, 2020
for a project
jim w on May 1, 2020
Much better product than I have now. It comes highly recommended, I need it for my woodworking project’s
Reverdy A on Apr 17, 2020
I need accurate depth
Donald D on Apr 16, 2020
Doing precision work
John H on Mar 30, 2020
lost my last set
George W. D on Mar 29, 2020
For Brad bits
Todd R on Mar 21, 2020
For brad point bits
David K on Mar 7, 2020
To measure depth accurately while using dowel jig
Michael A on Mar 3, 2020
For drilling thin stock.
Roger C on Jan 28, 2020
I needed this for a project.
William M on Dec 30, 2019
because it was recommended with the doweling jig
Kellen W on Dec 27, 2019
A gift to my son of something I wish I had bought years ago rather than just recently.
Clint S on Dec 8, 2019
I believe that these collars will work better than tape.
Charles L on Dec 8, 2019
These will come in handy when needed.
John W N on Oct 25, 2019
Control depth in drilling finish woodwork
Gregory F on Oct 22, 2019
My drill press does not have a stop built into the drill.
steve e on Oct 11, 2019
I'm always using tape to provide a stop for drilling holes, so these collars will be a big help.
Roger L on Sep 21, 2019
I am working on a project and have always used tape around the drill bits for my stops.
Jon L on Sep 8, 2019
I dont have any stop collars and this looks like a good set
Ugenefrank on Aug 23, 2019
For the set in lieu the couple I have
Robert M on Jul 3, 2019
Good item to have instead of guessing on depths
Gary j on May 23, 2019
Surely didn't want to drill through the face of my nice walnut boards!
Jonathan F on May 20, 2019
Helps when using a doweling jig
Kevin K. on Apr 13, 2019
matched set
Salvatore V on Dec 24, 2018
gift
jodiebritton L on Dec 18, 2018
gift
David J on Dec 10, 2018
Easy to work with.
Juan R on Dec 5, 2018
So as not to drill through the material.
David R on Nov 30, 2018
More precise than a piece of tape.
Michelle M C on Nov 15, 2018
Needed replacements which were solid. The old harbor freight specials broke.
Ethan C on Nov 14, 2018
Decide to order these to help set bit depth, and not cut to deep.
Darrel G on Sep 28, 2018
Better than painter's tape!
Tatiana L on Sep 27, 2018
Need it for woodworking project.
Marlene L on Jun 23, 2018
To set-up for different depths.
Arthur A on Jun 18, 2018
WORKED WELL AND HELD UNLIKE OTHERS ON THE MARKET
Mark D on Jun 12, 2018
Tape is great for setting depth, but you can't compare to the accuracy and reliability of a split collar!
Michael H on May 6, 2018
Couldn’t find this product in any of the big box stores.
Jerry on Mar 5, 2018
A means is needed to get the correct depth when drilling holes for dowel pins with a hand drill. Tape was used on the drill bit, the bottom edge of the tape gets frayed when the tape is close to the drill guide.
Douglas D on Mar 5, 2018
Prompted by the set with match Drill Bit set
Shawn V on Dec 7, 2017
Same as above.
Virginia B on Dec 3, 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
Need a second set
Rex G on May 8, 2020
for a project
jim w on May 1, 2020
Is there a metric version?
John S on Apr 29, 2018
BEST ANSWER: I do not know.Enter
Prop 65 WarningWARNING: Cancer & Reproductive Harm - www.P65Warnings.ca.gov

Prop 65 WarningWARNING: Drilling, sawing, sanding or machining wood products can expose you to wood dust, a substance known to the State of California to cause cancer. Avoid inhaling wood dust or use a dust mask or other safeguards for personal protection. For more information go to www.P65Warnings.ca.gov/wood.