Cinch Tie Knot Tying Tool Home Page, Cinch Tie Knot Tyer the fishermans original brass knot tying tool can help you tie knots in seconds. Also see the Tru-Blood Tyer in action tying blood knots in seconds, make your own fly fishing leaders and save money. Knot Tying Tool, Knot Tool, Fly Fishing, Snell Knot, Fishing Knots, Tying knots, Cinch Tie.