When hooking in, you need to know that you will stayed hooked in no matter what happens during the hoist. Helicopter Hoist Hooks manufactured by LSC are designed to be the safest and and most reliable device in the hoist system. The risks in helicopter rescue work should not be compounded by an unreliable connection to the hoist cable. Once locked in to our D-Lok or Mil-Lok hooks, the connection is certain until you take intentional action to unhook. LSC hooks, by design, remove the possibility of dynamic roll out from the hook regardless of the attachment ring geometry.