Operation Manual: _x000D_ Step 1. When the temperature of the nozzle is 300-360 ℃, the regenerative operation is performed. _x000D_ Step 2. Put the weld in the resurrection ointment and wait for a few seconds. _x000D_ Step 3. Clean welding nozzles with solder sponge or copper wire. _x000D_ Step 4. Tin is plated on the welding nozzle. Repeat 2-3 steps when the regenerative effect is not obvious. _x000D_ Attention: When the abrasive residues on the solder nozzle for soldering, the abrasive attaches to the printed circuit board, which may cause erosion and damage to the circuit board. Please completely remove the abrasive on the solder nozzle before soldering. _x000D_ Weight:35g _x000D_ Size:34*25mm _x000D_ Package included: 1 pcs