The 3/8" (10mm) WorkPro is ideal for Mountain and Backcountry Rescue Teams. This rope is dual-certified to EN 1891 Type A and NFPA 1983 Technical Use, compatible with recreational climbing gear, light and packable. Uses: Rappelling, Anchoring, Light-Duty Rigging. For the WorkPro, we developed an entirely new approach to rope construction - one that makes for balanced elongation in the core and sheath so they share the load evenly. This makes the WorkPro stronger than other 11 mm ropes of similar construction while retaining a small but important amount of elongation.