The RFA-4005-20 Crimp Handle is precision manufactured of high-carbon, heat-treated, stamped steel and designed for smooth and rapid die closure. A simple pressure adjustment resets the scissors ratchet mechanism to compensate for different crimp dies and crimp forces. When the correct die is used, the full cycle ratchet will not release until a clean and tight crimp is achieved. Should a mismatch occur, the disengagement lever quickly releases the ratchet mechanism. (Shipped without plastic case.)