This Saxa Duolock snap is specially designed for lure fishing. Use these snaps when you want a lighter presentation of your lure without a swivel or when you want to change your lock in swivel&snap setup. They have rigid body so it doesn´t break when you hook up with the big fish.
The design of the snap is really simple so it is really easy to use. Smaller sizes are great with soft plastics and small wobblers. Bigger sizes works good with bigger spoons and wobblers.