Multi Purpose Safety Scuba Diving Dive Ratchet Reel - Durable plastic construction for long lasting performance in underwater environments. Built to withstand the rigors of cave and wreck diving and other diving activities. - Thumb/finger stopper for control. Provides enhanced handling during underwater maneuvers, allowing easy release and lock of the wire for smooth, controlled movement. - Easy to carry and use. Designed for convenience with a compact form factor. Size options are 13 x 14 cm (46 m) or 14 x 16 cm (83 m), allowing secure handling underwater without hindering movement. - Nylon fabric and strength. Features an 8 mm eight-strand woven nylon fabric, tightly woven for superior strength and durability. This construction withstands the tension and demands of various diving situations, delivering reliable performance every time. Applications and practical scenarios - Cave and wreck diving: deploy and manage guideline lines with precise control to navigate overhead environments safely. - Overhead and restricted environments: use the reel to maintain controlled line management, improving situational awareness and safety during passages and inspections. - General underwater navigation and search/recovery tasks: reliably deploy and retrieve lines to track positions, map areas, or locate targets during dives.