TE Connectivity CERTI-CRIMP II Straight Action Hand Crimping Tool CERTI-CRIMP hand crimping tools for crimping Miniature Rectanguar (MR) contacts with a variety of wire size ranges. These CERTI-CRIMP SAHT hand crimp tools have a straight action jaw closure, a CERTI-CRIMP ratchet mechanism, fixed and movable dies terminal positioning aids and insulation adjustment. The CERTI-CRIMP ratchet mechanism stays locked until the handles of the crimp tool are completely closed assuring the terminal is fully crimped, a ratchet release can be used for emergencies. The handles of these CERTI-CRIMP hand crimpers have an ergonomic non-slip design. Stock number 782-9732 is for use with MR Contacts with a wire size range of 26-22 AWG, 20-18 AWG Stock number 864-3728 is for use with MR Contacts with a wire size range of 26-24 AWG