Corrosion-resistant stainless steel and aluminum internal components extend service life and reduce replacement costs. Lightest composite unit on the market - easy to handle and transport to/from jobsites. Built-in ergonomically-designed molded handle on the 50ft and 65ft cable units provide support and leverage when attaching to anchorage connector. Easier to install. Dual swivels (unit top and snap hook) included on all cable models to minimize lifeline from twisting during use. Cable models - on snap hook, Web models - flag on webbing. No annual factory recertification required.