Manufactured from high quality C45 carbon steel, this Faithfull tap and die set is suitable for cleaning and cutting threads in mild steel, aluminium and brass. Each set contains a tap wrench, die holder, screwdriver and a range of metric taps and dies, featuring the most commonly used European threads. The Faithfull FAITAPDSET21 21 piece metric tap & die set contains the following: 1 x Tap wrench: M3-121 x Die stock holder: 25mm (1 inch)1 x Screwdriver8 x Metric Taps: 3 x 0.5mm, 4 x 0.7mm, 5 x 0.8mm, 6 x 1.0mm, 7 x 1.0mm, 8 x 1.25mm, 10 x 1.5mm and 12 x 1.75mm.1 x Tap: 1/8 inch NPT8 x Metric Dies (same sizes as metric taps)1 x Die: 1/8 inch NPT.Additional Information:• Thread Type: Tap & Die Set