I picked up one of these the other day in green. It is about 1.5 inches long and fits in the pouch nicely. The little blade is more than enough for cutting leader material. The bottle cap remover works great for tightening knots to you hooks. I create a knot, then hook the fly over the back of the knife and then yank to tighten the leader. I used to hold on to the fly, but have sunk a couple into my finger.