Sink-O-Rings are great for those Senkos or stick bait worms. These rings have better grip, better hookset, won't loose ring if worm is lost and easy to use. No longer need tool to rig up Senko wacky style! Patent pending status. Use 1/4" with 3"-4" size stick baits/Senko worms .Use Sink-O-RIngs 3/8" with 5"-6" size stick baits/Senko worms.