14pcs ER20 Spring Collet Set for CNC Engraving Machine and Milling Lathe Tool Workholding Engraving Collets (1/16",3/32",1/8",5/32",3/16",7/32",1/4",9/32",5/16",11/32",3/8",13/32",7/16",1/2")

Good assortment for price, would recommend

I bought these to use on a small HF mill. I was very new to the hobby and pretty confused about my options. This well priced set has covered every end mill I own. A++

I bought these to go with the indexing hexes and they are very nice. Limited use but I really feel they are a good value for the price. The only reason I haven't given them a five star rating is I haven't had much use and don't know how the accuracy is.

Lo recomiendo

I used almost every one of these for a drill regrinding project, (1/8-1/2 by 1/32nds) and they all appeared concentric, gripped well, and gave drills with near perfect split points. (Perfect as far as I can measure.)I did not try to measure the accuracy of the holder, but if you are trying for sub 0.001" accuracy, I suspect that this should probably not be your set of choice.

A high quality chuck with all the right sizes that were promised, as well as a reminder about their 100% satisfaction guarantee. Came with a brochure that asked to be rated on shipping speed, item description and communication.Shipping speed was impeccable. I used the free (not prime) shipping on 5/17 give the system a day to process and that means 10 day shipping. That's pretty impressive. The description was spot on and through their actions and quality I didn't feel the need to contact them.I write reviews as I see them. I am not paid or endorsed by this (or any) company and am just really happy with their quality and professionalism. I am only saying this because my review sounds to good and that is a testament to the quality and care that I received.

These collets work for milling machines. Easy to use and very accurate

Half of the sizes were missing. Still had 26 pieces in total, but most of the sizes had duplicates and even a few triplets. I had to return this. I could have lived with a couple of the 32nd sizes missing, but what I got was missing the common sizes like 9/16", 5/8", and 3/4". The picture shows the 12 sizes that were missing, 8 duplicates, and 2 triplets (sorry I had poor lighting and should have laid them out better).I tested a few of the sizes that I did get and I was not impressed by their accuracy. Most of them had between 0.002" to 0.006" of indicated runout and they were not repeatable. I'd chuck up a precision ground rod and at first I'd get about 0.004" TIR. Removing and re-chucking the same rod it would might go down to 0.0015" or up to 0.005". I think I did manage to get one bar chucked in at about 0.001" TIR, but only after piddling with it for a few minutes. As a sanity check, I indicated the taper inside my collet chuck and read about 0.0004" in the front and back with the high spot on the same side... meaning that it was off center that amount but still parallel with the spindle.Even if I had received all the sizes they advertised, what I received was nowhere near the advertised 0.0005" runout. Completely unacceptable for collets. I should have known what to expect, but I took the gamble anyway. I ended up returning these and ordering some from LittleMachineShop. Those actually stand up to their stated specs.

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.

Durables, adaptables y de buena calidad...

Items are exactly what was expected and arrived promptly.

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