The Jawn Set is designed specifically to tie with hollow tie and reverse tie techniques on streamers. The Jawn fly tying tool has a slot that allows tying with jig hooks and bent shank fly tying hooks. Bothe ends are flared to allow for tying with either large or small amounts of fly tying material. The Jawn Set comes with 3 different sizes to accommodate tying different size streamers. This is perfect for both saltwater fly tying and warmwater tying for bass and muskies.