Technical divers use a Jon Line to maintain a certain depth when ascent lines are crowded with other divers or when the current is ripping. Dive Rite's Jon Line easily clips onto an anchor line or down line and is also easy to remove. Stored inside a small, nylon dispenser pouch is 5' (1.52m) of yellow 1" (2.5cm) nylon webbing with a marine grade, stainless steel carabineer.The carabineer is box stitched sewn to the webbing and pouch for added strength and safety. The dispenser pouch will slide easily onto any standard 2" (5.1cm) webbing with an elastic attachment loop on the back of the pouch. The pouch has a hook & loop closure and a D-ring for clip off. The carabineer can be clipped into lines to free run up and down the line or wrapped and clipped for a friction wrap around an anchor/down line.