CLEAN AND ACCURATE CUTS: Be ready to tap and thread in your garage or workshop with the Master Your Jobs kit: internal/external rethreading, cutting new material, repairing rusted screws, nuts, bolts, and spark plugs. The 40 complementary pieces offer maximum versatility. EXTENSIVE RANGE OF METRIC SIZES: Includes common coarse and fine thread sizes, three- and four-stud, taper, and plug tap and die pitches. Includes 8 thread sizes M3 to M12 with 16 NPT (1/8-27) pitches to meet all your needs. GCR15 ALLOY STEEL FOR METALS: Perfect for carbon alloy steels, cast iron, aluminum, brass, and bronze. GCr15 steel ensures high Rockwell hardness, excellent contact fatigue resistance, and superior corrosion resistance. 3 Tap and Die Wrench Handles: Use the alloy steel wrench handles with adjustable fittings to secure and manipulate taps and dies. The kit also includes a handy mini screwdriver for assembling and securing dies with ease. Accurate Thread Pitch Gauge: Quickly and accurately measure