OPERATION MANUAL FOR <& YC tools g (HAND CRIMP TOOL FOR LOOSE PIECE OPEN BARREL TERMINALS) FERRELL RPN b b sexton e R 1. General The YC series hand crimp tools are used to crimp loose piece open barrel terminals to wire in the recommended wire range for each terminal. Each tool has two crimping sections (A & B). Please refer to the chart to find which section should be used. Some tools come equipped with a locator spring to aid in positioning of the terminal, 2.