The ART Alu Anchor Ring is technically a spare part for the ART Ropeguides but with its 50mm internal diameter it makes a very versatile anchor ring. Partners seamlessly with the ART Link 1 pulley (in that, the Link will pass easily through the ring hole). An anchor ring this size can also be spliced into a length of rope to make a handy (adjustable) anchor for your SRT system. If you stop and think about you'll probably find a hundred uses for this rated anchor ring!