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.

Set includes collars for 1/8", 3/16", 1/4", 5/16", 3/8", 7/16" and 1/2" size bits. 1/8" hex key also available (two per pack). Select the proper collar diameter, slide it onto the drill bit, and tighten the single 1/8" 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.

Customer Reviews and Photos for: 7-Pc. Split Collar Set Average Rating: (2.0) (3 customer reviews) Add your review...

1) Submitted by Dustin, from Brookings, SD on 3/1/2009 Customer Rating: These collars are very stiff. Very hard to tighten down. I thought I was going to snap the allen wrench trying to squeeze these down. Once set up though, they work fine. Hopefully once they are wore in a little they will tighten down easier.

2) Submitted by Don Gallagher, from Pittsburgh, PA on 7/24/2009 Customer Rating: Very hard to tighten down, snapped the first set screw 15 minutes out of the package.

3) Submitted by Carl, from Southfield, MI on 5/22/2008 Customer Rating: 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.