MFC Tarantino's Riffle Tubes are plastic molded tubes designed to allow tube flies to be riffle-hitched without actually having to do a riffle hitch. The tippet comes out of the side of the tube instead of the front, making the fly wake or swim. These tubes do nt come with junction tubing. The junction tubing to fit is the large 1/8" ID X 5/32" OD (like HMH). Bottlenose only.