Feature: 1. Main Application: The paste is to clean the black oxide layer of the soldering iron tip can remove the oxide layer, and re tin the soldering tip to make it look new and prolong its service life. 2. Easy Operation: Put the tip of the soldering iron directly into the paste for two or three seconds during work, then clean it with a sponge and then you can put it into use again. The repairing effect is outstanding! 3. Do Not Affect Work: When cleaning the soldering iron, the temperature will only drop by 2 to 3°C. After cleaning, it can be soldered immediately, it does not affect the working effect. 4. Easy Carrying: With a small size and light weight, you can just put it in your pocket anywhere you want to operate your work. 5. 4Pcs: There are 4 pieces clean paste in the package, enough amount to meet your daily needs and can be used for a long time. Specification: Item Type: Soldering Tip Refresher Clean Paste Material: Tin Powder Application: Soldering Iron Tip. Package List: 4 x Soldering Tip Refresher Clean Paste