You need not worry about snap failure when using a Mustad Stay-Lok Snap between your line and lure. With its self-reinforced design and premium hook wire construction, this snap simply will not open while you're fishing, no matter how much force is applied to it yet when you need to change your rigging, you'll find it incredibly easy to open. Great for crankbaits, spoons, and other non-twisting lures. Powerful design will not pry open while fishing Easy to open when changing lures Premium hook wire construction Great for use with all non-twisting lures