The Streamer Head fits both the Standard Fork and the T-Rex fork. Excellent for tying artificials from #10 to #3/0. In use with the T-Rex Fork you can insert two Streamer Heads, so you can better fix even the biggest hooks such as #4/0 #6/0 #8/0. In fact, the hook will be fixed in two points: a head will grip the part near the barbel, the other in the middle or the beginning of the curvature.