Multi-Tool Shackle key for loosening tight shackles Large screw driver-also used for loosening fresh water tank caps, fuel caps and head caps that are flushed on the deck of sail boats and other vessels. Turn buckle key-Long neck bottle opener-Tune the rig with the turn buckle key at the ready The push button feature allows one handed operation, an important feature during heavy weather sailing. The 420 Storm clips onto foul weather gear, belt or trouser pocket and is also designed to accept 550 parachute cord lanyard. The non slip texture offers tire like traction and the best non slip performance available. 4-40 Allen screw assembly allows quick adjustment for controlling the speed of the Storm auto shackle key deployment. The shackle key is water jet cut using .115 thick 316 stainless steel and hardened for added strength to a Rockwell of 40 C. the Shackle key automatically locks open, slide the slide lock forward into position to back up the lock mechanism for safety. The 420 Storm'' is a valuable tool for anyone working the foredeck.