The Wacky Rig Tool Combo rigs wacky rings to plastic worms with ease. Secure hooks to the worm without hook penetration, greatly reducing the wear-and-tear on your worm due to aggressive fish, short strikes or over-casting. Product Features Hollow Tube for Worm Allows Desired Ring Position. Simply Roll Ring Onto Worm at Desired Position. Thread Hook Between Ring and Worm. Tool Has a Tapered End to Fit Any Size Rings. Pre-Loaded with 15 Clear Rings (Diameter: 6mm, Size: 6) .