Hakko soldering tip FX601, 6,5mm

If you buy a Hakko soldering iron FX601, it comes with a screwdriver-shaped tip as standard. 
You can replace it with this angled soldering tip with a diameter of 6.5 mm. 

These soldering tips are made of red copper, red copper conducts heat perfectly, but red copper is a soft metal protected by a tin layer. Each time after use, clean the soldering tip with salmiac to keep this tin layer in good condition.