2Pcs 1/2" to 1/4" Router Collet Reduction Sleeve Tool Bit - A3 Carbon Steel Black

They work perfectly

Shipped in great shape and working great

these do not work as good as the original sleeve that was in my router. had to experiment to get it to grip the router bit properly. Router bits tend to slip in these sleeves

Installed one in my 1/2" router to use a large but 1/4" shank bit. It performed perfect. Also, a good value for the price.

Used with a bosch router, it functioned exactly as it’s supposed to. No complaints!

I have a router table that takes half inch shaft bits. I needed a specific bit that I could only find with a quarter inch shaft, so I also bought this adaptor. Horrible! It appears that the adaptor is not milled totally square, causing a visible "wobble" on the router bit. This caused the bit to loosen out of the chuck and start to rise up out of the collet. Not a good situation when something is spinning at about 30,000 RPMs! Took it back out, reinstalled it to make sure it wasn't somehow sitting in there crooked but still had the same situation. Just turning the router on for a split second was enough to see the wobble and the bit start to climb up out of the collet. Returning it

Great for the price, but needs some work to use. Unlike the stock photos, what I received were very rough machined with pitting, horizontal grooving, and even a plane sliced off near the edge as seen in the photo. The inside is even more rough with grooves / spirals all the way down. They also do not have bevels on the outer ends and are straight cuts. The inner edge at the ends at least are beveled, although again very rough. I got these since I have some bits that are 6.335mm shank that don’t fit in a 1/4” collar I already have (which fits the 6.315mm shanks I do have) and figured I get some cheap collars to modify. I had to measure the bits with a 0.01mm caliper since I was bewildered why some 1/4” bits fit while others didn’t. Oddly they fell into two sizes across several manufacturers, differing even within the same maker. These collars being very rough don’t even let the “slimmer” 1/4” bits as described above through smoothly, although with a slight push or sanding of the inside it works fine. Great as a starting point if you intend to modify them from the start, but if you have quality bits these will scuff up shanks and probably won’t hold them with the same force as more expensive ones. At the least, it will be unevenly secured due to the massive grooving and may lead to forming grooves on the router bit shanks over time as well.

Looking at it I didn’t realize why it looks the way it does.. but once I got everything put together, made total sense. I got a nice round edge with the router and bit I had - the adapter worked perfectly.

Fast delivery Works great in my router

Replacements for colletts I have been using for 20 years. These are great after-market colletts, fit well and hold the router bits well. A lot to like.

Good thing that they were sold in a pair. One is perfect and the router bit fits nicely.The other Collet Reduction Sleeve is just too tight. One has to force a bit in and I would think removing it would be a challenge. Now they are well made. A few reviewers mentioned that they were too tight and they are right. I got lucky as at least one was perfect while I assume some got two bad ones. Not sure why the factory does not check each one before they go out the door..

Compared to the name brand options this is a steal. 1/3 of the price for a well made and fully functional product. I would have preferred a ridge on on end to keep them from slipping into the collet but that’s not a big problem.

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