Firehole Sticks 551 Fly Tying Hook - The 551 is a heavy jig style hook with a 60 degree bend at the eye. It is designed to allow for larger beads without impeding the gape opening. This is a 1X long length jig hook with a 2X gape. It has a 60 degree down eye and is formed from a heavy weight wire. Available in sizes #4 to #20.