Used to connect Purse Seine Net to Purse Seine Ring. Adopts an interlock system: A large working load limit is achieved with its palm size An interlock system is employed for greater strength. The hook part firmly supports the load. Good operability is ensured by smooth movement of the gate and the wide opening. The rounded gate fits well with fingers and ropes. *Usage precautions Your fingers may be caught between the body and the gate when opening and closing the gate due to the structure of the product. Wear gloves and take care that your fingers do not get caught. *In using "Snap Hook size 1SH" with "Tough Hanging Roller", 1SH can pass through smoothly between the body and the sheave of Tough Hanging Roller. *Material: Special Stainless Steel Spring: SUS304 Lock Pin: Copper Alloy Set Screw: SUS304