The 1901611-2 is a CERTI-CRIMP II straight action Hand Tool for use with PIDG STRATO-THERM 20AWG contacts. It features a head containing two stationary crimping dies (anvils) and two movable crimping dies (indenters), a locator, insulation adjustment spacers and a CERTI-CRIMP ratchet. When closed, the crimping dies form two crimping chambers with two sections - an insulation barrel section and a wire barrel section. The insulation barrel section crimps the terminal onto the wire insulation and simultaneously, the wire barrel section crimps the terminal wire barrel onto the stripped wire. The locator positions the terminal in the crimping chamber. The insulation adjustment spacers are used to regulate the height of the insulation crimp. The CERTI-CRIMP ratchet ensures full crimping of the terminal. Once engaged, the ratchet will not release until the tool handles have been fully closed.