Dang. I guess it has been awhile since I've needed some heavier streamer tying thread. I'm down to my last couple of spools of black 3/0 Gudebrod. I was just looking around on-line and see they are out of business. I have quite a bunch of their rod wrapping thread and, at some point, started using their fly tying thread for larger fly's. These are the old style smaller spools sized similar to Uni thread spools. I really like how strong the Gudebrod stuff is and now looking for a good option. What are you using for larger streamer patterns?