These are used in similar applications as our "Tie-Loks", but this series is more affordable and simply cinches up and manually breaks off when you want (whereas the Tie-Loks are set to tension and will auto center punch when tight). These are used in applications where nylon/plastic cable ties or zap-straps do not stand up to the abuse or the environment - and therefore a metal strap/tie is preferred. This tool must be used with the below straps/ties (sold 100/bag).