This is my third attempt to buy 5C square collets and all the threads are 18-23k cut and you only have 44. The total thread depth between male and female is of great Meaning, and you'll remove the tie rods, collets, or both. It looks like all 5C round and square collets on Amazon are made in China. and if China has problems, then so do all the other brands. I called Accusize and asked them about the problem and they said the collets are from China and they couldn't do anything about it other than refund my money so it looks like Accusize will just take the Chinese junk and give the square 5C an extra one Add $45. A collet with a hole sticks a sticker on it without even doing quality control and ships it. Well done I think you are not as good as the Canadian manufacturer as I thought I am really disappointed and I need to think twice before buying anything from Accusize. I might as well buy something I know from China and cut out the middleman and save a lot more money.