Welcome to our store! Features: These tips are made of oxygen-free copper or copper, easy to tin and diamagnetic, suitable for lower-temperature soldering. There are a total of 7 types of soldering tips in this set, and you can choose the right one for different soldering needs. Don't leave your iron on for hours and hours if you're not using it. This can cause the tip to get a black coating. Try to tin the tip while it's hot. Letting it sit on too long or running it too hot will burn the solder off and turn it black again. These soldering tips are suitable for 936, 937, 938, 969, 8586, 852D soldering stations. Specifications: Color: Silver Length: Approx. 42 mm / 1.65" Outer Diameter: 6 mm / 0.23" Inner Diameter: 4 mm / 0.15" Temperature Range: 200 ℃ ~ 480 ℃ Shape: 3C/I/SK(2pcs)/2.4D(2pcs)/IS/B(2pcs)/K Suitable for: 936, 937, 938, 969, 8586, 852D soldering station Package Includes: 10 pcs x Soldering Tips Please allow minor errors due to manual measurement and different monitors. (Customer satisfaction is our top priority. If you find any product problems after receiving the goods, such as damage or incorrect quantity, please contact us immediately. We will do our best to provide you with satisfactory customer service.) Thank you for meeting me. I hope this helps you. Wishing you a happy life.