The Perfect Wacky O'Rings are just that, they are designed to help keep your hook perpendicular to your worm without having to slide the hook under the O?Ring. The Perfect Wacky O?Ring comes with a small attached O?Ring to keep the hook in the perfect position and help you land big fish. Each refill pack comes with 25 Finesse or 5 inch Perfect Wacky O?Rings.