a prusik loop cord on 5mm rope, closed with a double fisherman knot. this loop is used in climbing, canyoneering, mountaineering

5mm abseiling access accessory alpinism arborist background canyoneer canyoneering canyoning caving center centered climbing closed closeup construction cord double equipment fisherman gear hardware isolated knot line loop macro mountaineering nautical object protection prusik prussic prussick rack rappelling rescue rope safety sailing static technician this tool used white working yellow zipline ziplining