3M DBI-SALA Rollgliss Technical Rescue, Noworries 8700071 Single Stop Descender, Double Rope, Anodized Blue Aluminum, Suits 7/16"-1/2" Rope A simple single stop controlled descent device that easily regulates friction and provides a smooth descent in varied conditions The handle acts as a dynamic variable friction lever, capable of going from a complete stop to complete go, allowing the user to regulate the descent providing greater flexibility with larger loads The self-braking system allows you to stop the descent if you let go of the handle and protects you if you were to become unconscious during a descent This simple to rig descender is ideal for use on 105-13mm kernmantle rope depending on your application NoWorries double rope, single stop descender, anodized blue aluminum, suits 105-13mm rope