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

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.

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.

These do NOT go in right away when they arrive. You have to fiddle with them a bit to get the router and the bit in sync to where they are both tightening properly with the collet sleeve. But, there are so many different routers out there, I'm not surprised.

This product meets my expectations at a good price.

Do not buy this. It borders on gimmick. A collet adaptor should have multiple slits running most of the way, from each end - as do collets in general, to give flexibility.This, in contrast has only one full slit, running the full length, and a few half-depth slits too, that do very little. It's not flexible enough to bite down on the 1/4" bit in my 1/2" Ridgid router. Sooooo - I still need to buy a 1/2" x 1/4" collet-adaptor. This will be tossed in the scrap steel bin.

Perfect fit for reducing router bit holder from 1/2 inch to 1/4 inch bits.

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.

Perfect fit. Used it to do round over edge on a counter top.