Features: These tips are made of copper, unplated, easy to tin plate and anti-magnetic, suitable for lower temperature welding. There are 5 types of soldering iron tips in this set. You can choose the right soldering iron tip according to different soldering needs. If you do not use an iron, do not let the iron run for several hours. This allows the tip to get a black oxide layer. Try tinning the tip while heating. If you leave it for too long or run it too hot, it will burn off the solder and turn black again. These soldering iron tips are suitable for soldering stations.Package Includes:5 Pcsx Soldering Iron TipSpecifications:Material:CopperSize1: Approx.14x4.7mm/0.55x0.18inchSize2: Approx.15x2.4mm/0.59x0.09inchSize3: Approx.16x3mm/0.62x0.11inchnote:1.Please allow 1-2mm errors due to manual measurement, make sure that you do not mind before you order.2.Due to the difference between different monitors, the picture may not reflect the actual color of the item.