PortaCrimp Die Set For Heat Shrink Connectors. Crimps Yellow 4-6mm (12-10 AWG) & Green 0.32-0.75mm (22-18 AWG). One piece die held together to prevent mix up and loss. Easily interchangeable crimp dies are kept together with a special pin to simplify handling. Reliable crimping performance is consistant and accurate with a parallel action stroke, good to 50,000 cycles.