Tap And Die Set Bearing Steel Titanium Coated (86 Piece Set With Metal Storage All cutting teeth are precision CNC machined and precision heat treated to Rockwell 60 HRC Titanium coating for optimum thread performance, with smooth ground surfaces to reduce friction damage to tools?These tools work perfectly to correct or create internal and external threading through wood, copper, aluminum, iron, carbon steel, and more! ?High-quality material: Made of industrial-grade GCr15 bearing steel, which ensures the firmness of the tool, as well as the better cutting performance of the tool, which effectively improves the service life of the product ?Manufacturing Process: All cutting teeth are precision CNC machined and precision heat treated to Rockwell 60 HRC Titanium coating for optimum thread performance, with smooth ground surfaces to reduce friction damage to tools ?Accessories:39 x Metric SAE Taps 39x Metric SAE Dies 1 x Adjustable Tap Wrench 1 x Adjustable Die Wrench 1 x T-Handle Tap Wrench 1 x Die Wrench 1 x Metric Pitch Gauge 1 x SAE Pitch Gauge 1 x Iron Rod 1 x Screwdriver 1 x Instructions Metric Size for Tap Die M3x0.5mm, M4x0.7mm, M5x0.8mm, M6x1.0mm, M7x1.0mm, M8x1.0mm, M8x1.25mm, M9x1.25mm, M10x1.25mm, M10x1.5mm, M11x1.25mm, M11x1.5mm, M12x1.5mm, M12x1.75mm, M14x1.5mm, M14x2.0mm, M16x1.5mm, M16x2.0mm SAE Size for Tap Die 1/8"-27 NPT, #4-40 NC, #6-32 NC, #8-32 NC, #10-24 NC, #10-32 NF, #12-24 NC, 1/4"-20 NC, 1/4"-28 NF, 5/16"-18 NC, 5/16"-24 NF, 3/8"-16 NC, 3/8"-24 NF, 7/16"-14 NC, 7/16"-20 NF, 1/2"-13 NC, 1/2"-20 NF, 9/16"-12 NC, 9/16"-18 NF, 5/8"-11 NC, 5/8"-18 NF