Metric tap and die set suitable for forming internal and external threads. in soft material. Can also be used for removing rust and flaking paint from exisiting. threads. 21 piece metic tap and die set in a plastic storage case with transparent. cover. Components are manufactured from high carbon steel, hardened and tempered. SPECIFICATION: Sizes: 3, 4, 6, 7, 8, 10, 12 mm. 0.5, 0.7, 0.8, 1.0, 1.25, 1.5, 1.75 pitch mm. Tap and Die:1/8" NPT. Bar type wrench: M3 - 12 (1/8" - 1/2"). Die holder. Screwdriver.