Review on Weller 7250W Standard Solder Tip Replacement (5.5mm) - Compatible with D550/D650 Solder Guns (2 Pack) by John Greene

I didn't bother with my last tea and didn't understand why it wasn't warming. I re-tightened it and tried tinning it again but to no avail. I bought them and so far they are working great. Now when I use my soldering iron I actually tinned and cleaned the tip like I should have done all along so they should last a while. The new ones heat up quickly. I used my wattmeter and the final tip was to not use many watts at all. The new tip is very close to the actual output of my soldering gun at low and high frequencies.