Here is a crimper that gets err done, its made in China like most of the others BUT.....the dies have been redisgned by an american engineer to fit the lugs that we use here which are very much thicker than the asian ones.
This is marketed by TEMCO.......Tower Electric Motor Company.......Fremont California, Temcoindustrial.com They have a very nice web presence and can be found on eBay as well, maybe still on Amazon. I have both of these but the larger is the one....it will do from about 6 ga. all the way up to 600MCM, dies are included fot 1/0, 2/0 , 3/0, 4/0, 250MCM, 350MCM etc.....
This company backs what it says with a no questions warranty, Ive dealt with them for years and they have allways done a good deal....
the first pics are the TH0005 10 ga. to 600 MCM with 18 die sets,
second pic, top row of dies, Chinese variant, bottom row of dies, TEMCO dies......check out the difference in sizes! (these dies are for the TH0006 smaller crimper)
third pic is smaller one TH0006 12 ga. to doulble ott (00) alonwg with the harbor freight version, same except with smaller asian dies that fit very thin terminals.
last pic..complete .die sets for the TH0005