Features - Metric Set - Heavy Duty - Heat-Treated - Rust-Resistant - Tungsten Steel Construction - Precision Machined To Exacting Standards - Precision Ground And Polished Surfaces, Facilitate Chip Removal - 12 Pcs Tap & Die Sizes 2"OD: M20X2.5, M20X1.5, M22X2.5, m24X3 & M24X1.5 - 28 Pcs Tap & Die Sizes 1-1/2"OD: M6X1, M6X0.75, M8X1.25, M8X1, M10X1.5, M10X1.25, M12X1.75, M12X1.5, M14X2, M14X1.5, M16X2, M16X1.5, M18X2.5 & M18X1.5