For the price I really can't complain. However, the two smaller trucks are almost useless. The collet is cut off in the middle and has no centering chamfer. The few bits you fit in the collet are off-center and slightly beveled. Given the size and shape, it is possible to replace the collet in the two smaller vises with nylon plugs and manually cut the slots in the clamp. Since they're out of the box, they're useless junk. The two large vices are present and work great. The collet flutes are centrally located, reasonably burr-free (not perfect, but "good enough") and have centering chamfers drilled in the middle. Works fantastic with 2-3.5mm bits. I really appreciate the flared design of the knurled handle section where it connects to the collet, making it extremely easy to manipulate and use to expand clogged passageways. after cleaning with tool oil and re-lubricating with something that doesn't smell like rotten gym socks (3-in-1 mineral oil works well). 0.95mm), look elsewhere. You will only get upset. If you're looking to resharpen the collets for two smaller vises, you'll find they're just as functional as their big brothers. However, if you're willing to take this path, don't waste time and money doing things you could already be doing yourself - just do it right, starting with the word "go." We share the difference: 5 stars for two large vices. , 1 star for the two smaller ones, up to an average of 3 stars for a set