I have a tough time with my hex wrenches. The brand I use is generally Bondhus, which have a good reputation. However I find that after about 3 weeks the ends get the corners rounded off and then I have to go out to my industrial belt sander and grind back the ends until I get past the rounded off corners. Consequently, my hex wrenches keep getting shorter and shorter. I want to buy a good set of small, imperial sized hex wrenches with the ends a different material than the main body. An end made of something super tough that won't round off under daily use. I see about a million brands advertised on the internet, but I don't trust the internet all that much. I would like to get 5/64", 3/32", 7/64", 1/8" 9/64" and 5/32" sizes. Does anyone have a supplier of this sort of thing that they could recommend to me please.---Brian Rupnow