Features: These ends are made of copper, non galvanized, malleable castings and hot formed, suitable for welding at lower temperatures. This type of ultra sharp is suitable for bridging modifications caused by process, n-space soldering, or chip soldering. If not in use, do not let the iron run continuously for several hours. This can enable the tip to obtain a black oxide coating. Try the tip while it's hot. If you leave it for too long or run it too hot, it will burn out the solder and turn black again. These welding heads are suitable for welding stations such as 936 and 937. High security and stable performance. Strong corrosion resistance. Material: Copper Color: As shown in the picture 2 models for you to choose from: 900M-T-I; 900M-T-IS Size: As shown in the picture Quantity: 1 piece Packaging content: 1 welding iron tip Attention: 1. Due to manual measurement, please allow an error of 1-3 centimeters. 2. Different monitors may have different colors, please understand.