Steel Tap And Die Set is ideal for cutting and repairing screw threads Steel Tap And Die Set includes 18x (M3x 0.5mm, M4x 0.7mm, M5x 0.8mm, M6x 1mm, M7x 1mm, M8x 1.25mm, M9x 1.25mm, M10x1.5mm and M12x 1.75mm) taps and dies, tap handle M2-M12(1/16"-1/2"), die handle M25(1"), plastic carry case Set is made of high quality steel Set has metric units of measurement