This worm collar has palmered Schlappen Hackle,behind palmered saddle hackle which gives an entirely different look and profile for fishing the deadly plastic worm. you'll love our inovative and simple way to keep the worm where it should be, on the shank, and not sliding down to the bend, this is accomplished by building up of thread on the shank, it holds the worm securely, with no hassles. Simply slide the worm behind the hackle, and cast! FISH ON!!