Its about 4" of 30# backing (braid such as tuff line or power pro works too), with the chenille body wrapped from hook eye AROUND the braid all the way up to amputated hook eye/bead. PLay with how tight you wrap the chenille. Too tight, and you have a very stiff worm, too loose, and it will want to slide back and bunch up above the trailer hook... there is a happy medium.

Nice thing about these, unlike rubber worms, is that your line won't slice through them after a couple casts...
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