All Retention Systems Are Not Created Equal. Snap-on Industrial Brands uses a stainless steel, screw-locking carabiner connector while many competitors use aluminum connectors that are not load rated. Snap-on 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.