HEAVY DUTY SNAP HOOK CARABINER - Spring snap hooks are constructed with zinc galvanized carbon steel with premium polishing surface, available in corrosion resistant and rustproof; Provide a wide application in order to close a ring or loop to a semi-permanent attachment. QUICK LINK CHAIN WITH SECURE - Spring snap clips are self-closing/self-locking connectors feature a gate that open into the throat of the hook. Auto-close spring gate is secured with a pin that springs back into place which provide a quick connection for rigging, coupling or anchoring. 4INCH SPRING SNAP HOOK - M10 spring snap link with 3/8" wire diameter for heavy loading up to 770lbs; Secure connection attachment for swing hammock gym outdoor. Large heavy duty carabiner clip with 4inch full length for chain, wire, rope and slings. VERSATILE USAGE QUICK LINK CHAIN - Multipurpose snap hooks are the perfect carabiner accessories for outdoor activities, such as swing set, gym, camping, hiking, boating, fishing, traveling. Also good for quick household attachment of keychain, rope and backpack. 30PCS SPRING CARABINER CLIP - Package include 30pcs spring snap hook; they have a durable moving spring which can be easily opened and closed for reattachment. The wide open shape of the snap hook allows for a wide range of movement.