The crimpers work perfectly all the way up to 2/0 cable. Only minor complaint is that the jaws aren't marked standard gauge size so it takes a second to double check that you're using the right size.
Chief mechanical engineer, button sorter and bottle washer
Instantly usable, fulfilled all requirements. Especially liked that it came with a sorted box of various terminal lugs and a package of pre-cut heat shrink tubes. These allowed me to proceed directly to completing the job that the purchase was designed to fulfill.
Pras 
