Our F-Shape rope runners are made from polycarbonate plastic for greater strength and the ability to hold the rope firmly in position. This is far better than previous designs which would easily slip down the rope or break. Registered designs apply. The Universal rope runner is also made from strong polycarbonate plastic. Designed and registered by Supa-Peg, it has a unique “Set & Forget” feature using a Z type locking action that prevents the rope from slipping once it has been adjusted. Also coloured yellow for easy visibility, it is a must have when camping.