A. Manufacturing materials: Made of 316 stainless steel, it has relatively high strength, is resistant to seawater corrosion, is durable and can be used for an extended period. It is relatively robust and has good safety performance. B. Usage method: One end has a hook, and the other end has a heavy-duty screw fastener for fixing the diver, helping to keep the drifting diver on the safety rope. C. Underwater use: When diving, there's less need to fear undercurrents. The stainless-steel water flow hook can offer a relatively safe support and stopping point, and also enable you to free your hands for underwater photography and underwater observation. It is a suitable equipment for cave divers, drift divers, scuba divers, underwater photographers, etc. D. Supporting accessories: Juli super-elastic and extra-long tension rope, with a length of up to 1 meter, is relatively strong and durable. It has 6 strands of stainless-steel wires inside and a colored PU coating outside. It is equipped with an anti-lost D-shaped buckle and can be hung on the BCD (buoyancy control device) for relatively easy and proper storage. It helps reduce the chance of losing things. E. Easy to use: It is designed to be portable and relatively easy to operate, with delicate craftsmanship. There are relatively few difficulty requirements even for first-time use. [Precautions] The water flow hook is not a weapon. When using the water flow hook to enjoy the seabed scenery, avoid using it to attack or overly harass marine life. Be cautious not to accidentally hurt your diving partner. [Two uses] When encountering a strong underwater undercurrent, you can hook the water flow hook on the reef to reduce the risk of being washed away by the undercurrent. It can hook on the reef to help stabilize your body and allow you to move underwater more easily. Item type: Double reef hook Color: Blue Material: Stainless steel Packaging contents: 1 diving spring hook Only the above items are included in the package, and no other products are included. Note: Light reflection and different monitors may cause slight differences between the color of the item in the picture and the actual object. A measurement error of plus or minus 1 - 3 cm is allowed.