Set of 32 taps and dies (metric) including 21 taps: M3 x 0.5, M4 x 0.7, M5 x 0.8, M6 x 1.0, M8 x 1.25, M10 x 1.5, M12 x 1.75 (3 pieces of each size, M3 pieces ). X0.8. M6X1.0, M8X1.25, M10X1.5, M12X1.75.The tap and die set is made of hardened tungsten steel alloy for high strength and durability.Known for their easy starting ability, these taps and dies are the most commonly used style and are ideal for most hand threading applications.The SAE and Metric Tap and Die Set are constructed of industrial grade steel that is hardened and heat treated to Rockwell hardness 55 HRC for performance of durable thread with satisfactory longevity. The metric tap set is used for processing internal threads, while the metric die set is for external threads. You will receive a set of 32 metric taps and dies, all originating in a stainless steel housing with slots of size mark that help store and organize tools and parts, providing easy portability, quick searching and avoid losing parts. The 32 piece tap and die set is a premium precision tool kit for hand cutting and repairing metal threads in your home, workshop or garage. Our tap and die set is made of heavy duty tungsten steel alloy, all internal trimmers are available in a 3 speed version .They are easy to use, cut harder materials, with precision and efficiency. Convenient and durable set: Repairing a damaged thread or blank thread will become a breeze with the tap and die set. 32-Piece Tap and Die Set Alloy Steel Metric Screw Thread 32-Piece Tap and Die Set (Metric ), including 21 taps; M3 x 0.5, M4 x 0.7, M5 x 0.8, M6 x 1.0, M8 x 1.25, M10 x 1.5, M12 x 1.75 (3 pieces of each size) and M3 x 0.5, M4 0.7m. 4x0.7, M4x0.7, M5x0.8x8, M6x1.0, M8x1.25, M10x1.5, M12x1.75.