Centre Maillon

Part of the SRT, or Single Rope Technique kit, which is used to overcome vertical drops, using a single rope to descend and ascend. Used to join the sit harness together and hold the most important load bearing components when progressing on the rope. A D shaped link with an opening screw joint that is used to put the harness on and other components on. Once screwed up, it is very strong. There are other components that can be used instead, but an ordinary karabiner is not designed for the three way loading experienced here and is dangerous.