Tap and Die Kit: Screw Plate PIN VISE 4" LONG used to thread wire, for re-threading of stripped threads on screws, earring backs and watch repair parts. Screw-plate (Die) is used for threading wire or making your own screws, while the individual taps are used with a pin vise.Set containing 5 taps sizes 0.6 to 1.0. Ideal for making earrings. PLUS American style double end pin vise. Hexagonal ends prevent rolling. Made of plated brass. 4" long.