40pcs Metric Tap and Die Set, Metric Standard Rethreading Tool Kit, Coarse and Fine Threads for Cutting External and Internal Threads, Essential Repair Tool Kit with Thread Wrench

RETHREADING SET -- Professional standard and metric tap die rethread tool kit for cutting or updating of internal and external threads on fasteners or fastener holes. The taps can also be used to remove broken screws.
EFFICIENT AND PRECISE -- All cutting teeth are precisely CNC machined and accurately heat treated to reach hardness 60 HRC for best threading performance.
LONG-LASTING MATERIAL -- Constructed from industrial grade hardened GCr15 bearing steel for maximum strength and longevity. Suitable for cutting steel, copper, aluminum, cast iron, and other materials.
ALL-IN-ONE SET -- Comes with thread gauge, tap handle, die handle, small tap chuck, and a carrying case for your convenience. Easy to assemble and operate.