EilxMag 110PCS Hardened Alloy Steel Metric Tap and Die Rethreading Tool Set

EilxMag 110PCS Hardened Alloy Steel Metric Tap and Die Rethreading Tool Set -??? Steel is the base metal used in the construction of these sets??? But not all steel is created equally! Look for steel alloy or, even better, Titanium tipped cutting surfaces. The better the metal the tougher the tap and die so they so they can cut into more materials and they will stay sharper for longer. 35 Taper Taps + 35 Plug Taps + 35 Dies + 2 Tap Wrench M3-M12, M6-M20 + 1 Die Holder 25mm, 38mm O/D + 1 T-Type Tap Wrench M3-M6. Tap and die set size??? M2 x 0.4, M3 x 0.5, M4 x 0.7, M5 x 0.8, M6 x 0.75, M6 x 1, M7 x 0.75, M7 x 1, M8 x 0.75, M8 x 1, M8 x 1.25, M9 x 0.75, M9 x 1, M9 x 1.25, M10 x 0.75, M10 x 1, M10 x 1.25, M10 x 1.5, M11 x 0.75, M11 x 1, M11 x 1.25, M11 x 1.5, M12 x 0.75, M12 x 1, M12 x 1.25, M12 x 1.5, M12 x 1.75, M14 x 1, M14 x 1.25, M14 x 1.5, M14 x 2, M16 x 1, M16 x 1.5, M16 x 2, M18 x 1.5??? Constructed from hardened alloy steel for maximum strength, durability and longevity. Heavy-duty plastic blow-molded carrying case for easy transport, safe storage & quick organization. Tapered teeth design to start threading easily and smoothly and prevent overthreading. Wide applications & Quality guarantee??? Suitable for the repair of new threads or damaged threads on most metals such as carbon steel, cast iron, aluminum, brass, copper and stainless steel.