Manufactured from high quality C45 carbon steel, <br>Suitable for cleaning and cutting threads in Mild Steel, Aluminium and Brass<br>The set include the following:<br>21Pcs metric tap <br>7Pcs Metric Die <br>1Pc Tap Holder<br>1Pc Die Holde<br>1Pc Screwdriver<br>1Pc Screw-pitch Gauge<br>