All Retention Systems Are Not Created Equal. Williams Industrial Brands' scaffolding tools and belts use stainless steel, screw-locking carabiner connectors while many competitors use aluminum connectors that are not load rated. Williams Industrial Brands also gives you a nylon tether that has a spring inside to absorb the shock of a dropped tool and built in drop indicator. Lanyards that have been involved in a drop should be replaced. The drop indicator identifies that for you. Browse our collection of Python tool lanyards and tethers.