Sculpin Helmets are wider, flatter, and heavier than Fish Skulls. They have a keel design so you can tie a fly to ride hook up or hook down. Easily slides on the hook from the front after tying the fly. There are 8 Sculpin Helmets per pack and they come with 3D stick on eyes. The Small size is best for #2 – #6. The Large size is best for #2 – #2/0.