14pcs ER20 Spring Collet Set for CNC Engraving Machine

I bought these a while back for my small milling machine, and so far they have worked wonderfully! They are well machined, and easy to use. I love them : )

Great product. One problem was I received 2 7/16" collects, but no 11/32" collet.

Fantastic collet set. First day I had them I used at least three different collets. I would give 5 stars but, one of them had a couple of pieces of metal chips inside from the slot cutting. I could not hesitate to buy them again, just know you'll want to check each one before the first use to make sure any metal chips do not interfere with the closer. I used the 3/8 to tram the head on a new mill. I then used the 1/4" to hold a indicator to square up my new vise and to mill the vise keys to fit my slots. I then use the 1/8 to mill a slot in a part. The results were perfection.

Very nice collets. Work great in my homemade collet chuck on my lathe. Would for sure buy again.

Nice fit and finish for my collet blocks. The hold tight and run concentric. Great buy!

Was a bit skeptical about the quality for such a competitive price - was mostly concerned about the runout. Have to say I was VERY pleasantly surprised. Using 0.001 indicator, measured the runout on 2 randomly selected collets. Runout was virtually imperceptible. Would need a .0005 or .0001 indicator to give a specific reading. The only negative is the etching of the sizes on some of the collets - not very deep, a bit off-center and some were pretty small. Not an issue for me now as I quickly built a simple plywood holder to keep them organized.

These are great. I use them with a Harbor Freight mini mill. Great value and have performed perfectly.

Dicovered that each collet has material remaining in some slots from machining process. Tried using the 3/4" collet with slightly under sized round bar and the material would not fit in with the collet when in the clamping nut. If the collet was not mounted in the clamping nut the stock would fit nicely. Looks like the taper on the collet was not machined completely.

Durables, adaptables y de buena calidad...

Excellent quality. Heck of a lot of pieces for the price. I don't know how anyone could complain. I've used 3-4 different sizes the first day or two and all work perfectly. Very happy.

I have had a metric set of ER32 Collets and purchased this imperial set, so far the Collets that I have used have run concentric and I have had no issues with them, I can now hold any size item between the two sets I now have

A great set for my wood lathe. Easy to change out and fits #2 mt head stock. Runs true with drill stock arbors that I use. Need to make a 3/8 thread draw bar.

Everything worked well