Gamakatsu Rebarb hooks are designed specifically for rigging soft plastic worms. They are made with high quality Gamakatsu hooks and have a molded plastic "Rebarb" on the hook shank that holds the worm securely in place. When rigged properly, the plastic Rebarb is pushed through the worm and backed up to wedge against the inside of the worm to prevent it from sliding down Gamakatsu ReBarb