An ideal system combines simplicity with modularity. We have incorporated a “quick change” snap-in receptacle into a Sternum Strap Adjuster, which can receive a swiveling D Ring, a light holder or a hydration tube holder. The hexagonal mount allows you to rotate any part to 8 different fixed positions. The slotted outside bars allow you to simply add the base unit to any position along the shoulder harness. The base unit also has two different web widths to accommodate either 1″ or 3/4″ webbing.