5pcs 900M Soldering Iron Tip Set Pure Copper Iron Head Solder Tool Tips
5PCS: B+I+IS+2C+3.2D. Try tinning the tip while heating. 5PCS I: I 5. 5PCS B: B 5. ● Suitable for: soldering station. If you do not use an iron, do not let the iron run for several hours. This allows the tip to obtain a black oxide layer.