Made of high-quality hardened alloy steel, durable and superior strength. Suitable for cutting steel, copper, aluminum, cast iron and other materials. Suitable for re-threading of fasteners and fastener holes, cutting or updating of internal and external threads. Precision milling of SAE and metric taps and molds are used for cutting raw materials or repairing existing threads, removing screws, etc. All cutting teeth are precisely CNC machined and accurately heat treated to Rockwell hardness 60 HRC for best threading performance. Set includes (20) Metric taps and dies: M3x0.5, M4x0.7, M5x0.8, M6x1.0, M7x1.0, M8x1.25, M9x1.25, M10x1.0, M10x1.5, M12x1.75; (20) SAE Fractional taps and dies for coarse thread (UNC): 4-40 NC, 6-32 NC, 8-32 NC, 10-24 NC, 12- 24 NC, 1/4-20 NC, 5/16-18 NC, 3/8-16 NC, 7/16-14 NC, 1/2-13 NC; (12) SAE Fractional taps and dies for fine thread (UNF): 10-32 NF, 1/4-28 NF, 5/16-24 NF, 3/8-24 NF, 7/16-20 NF, 1/2-20 NF; (2) NPT tap and die: 1/8-27 NPT. Heavy-duty plastic suitcase, easy to transport, safe storage, quick to organize, prevent accessories from falling off. Made of high-quality hardened alloy steel, durable and superior strength. Suitable for cutting steel, copper, aluminum, cast iron and other materials. Suitable for re-threading of fasteners and fastener holes, cutting or updating of internal and external threads. Precision milling of SAE and metric taps and molds are used for cutting raw materials or repairing existing threads, removing screws, etc. All cutting teeth are precisely CNC machined and accurately heat treated to Rockwell hardness 60 HRC for best threading performance. Heavy-duty plastic suitcase, easy to transport, safe storage, quick to organize, prevent accessories from falling off. Set includes: 20x Metric taps and dies: M3x0.5, M4x0.7, M5x0.8, M6x1.0, M7x1.0, M8x1.25, M9x1.25, M10x1.0, M10x1.5, M12x1.75 20x SAE Fractional taps and dies for coarse thread (UNC): 4-40 NC, 6-32 NC, 8-32 NC, 10-24 NC, 12- 24 NC, 1/4-20 NC, 5/16-18 NC, 3/8-16 NC, 7/16-14 NC, 1/2-13 NC 12x SAE Fractional taps and dies for fine thread (UNF): 10-32 NF, 1/4-28 NF, 5/16-24 NF, 3/8-24 NF, 7/16-20 NF, 1/2-20 NF 2x NPT tap and die: 1/8-27 NPT. 1x Adjustable Tap Handle 1x T-type Small Tap Handle 1x Adjustable Die Handle 2x Thread Pitch Gauges 1x Slotted Screwdriver 1x Storage Carry Case