Crimpers contact with ratchet or Crimper. It used to work with three types of non-insulated terminals: Loop type "O". Size crimp nests: 2018 awg. Cross section: 0,51,5 mm Fork type "U". Size crimp nests: 1614 awg. Cross section: 1,02,5 mm Blade. Size crimp nests 1816 awg. Section: Cross section: 4,06,0 mm