">The ASCZL331 is similar to the Model 331 except it features the Z-Lock reverse safety notch. Application of the Z-Lock handle punches a safety notch into the strapping that prevents movement of the crimped join and virtually eliminates the possibility of the crimped joint pushing apart when not under tension. The tool handles 3/4"(19mm) from .025"(.64mm) to .031"(.80mm) Hi Tensile strapping.
You must state size of strapping used so that tool can be set up for correct width and gauge. 
