The Al Gags Whip-It Eel Replacement tails are made for if you lose a tail on your eel lure. Made with durable PVC rubber. When replacing the tails you will find location dots on all size Eels. Just thread hook to the dot that has the jig head size label on it, when the point of the hook comes through you will be straight every time. A small drop of super glue where the tail meets the jig head is also a plus.