Monarch's Key Kop I Locking Key Rings use aircraft cable that is nylon coated and covered with a stainless spring steel cover to offer protection from abrasion and minimize kinking.
One end unlocks, while the other end is captive, preventing keys from being dumped while being serviced. Cable terminals are recessed within the body to minimize break points.
The bodies are machined from solid aircraft-grade aluminum bar, and are covered by colored polyurethane boots. This offers a way to code groups of keys to specific functions and offers protection for the body of the unit. Available with a choice of locks and in several lengths. Custom lengths are available.