The SRTE Noworries Belay Stop can be used with single rope 11 mm to 13mm. How to thread the rope and which way to turn the key is permanently stamped on the front cheek of the SRTE Noworries Belay Stop. The rope should flow freely through the SRTE Noworries Belay Stop.It's easy to thread the SRTE Noworries Belay Stop without removing the device from your harness.The key is the primary speed control mechanism. Once you start adjusting the key, never let go of the tail end of the rope as it is not only for balance but also is your secondary speed control mechanism.If you engage the key (i.e., key turned to GO), the Auto Lock mechanism is no longer operable; turning the key to STOP will brake your descent, i.e., you can adjust friction during descent.Although Stop Descenders or Belay devices only halt your descent, the SRTE Noworries Belay Stop is easy to lock-off if you intend to be stopped for any length of time, thus making sure you are completely secure.

However for The Noworries Belay Stop & Noworries Two Way Stop, when conditions are at their worst, such as wet and/or muddy, descending may be extremely slow and difficult when you are using stiff or large diameter ropes; therefore, modify your rappelling tactics accordingly.