Kester 24-6040-0039 Rosin Cored Wire Solder Roll, 44 Activated, 0.040 Diameter

Best solder I’ve used. Flows easily and makes perfect joints.

This is what you want.

As advertised. A little expensive, but worth it. Use it on custom audio equipment. No issues.

good value, good delivery, works as expected.

Good stuff. I really like this thickness of solder best.

I just started to solder, my first try was with some no name solder from China, 60/40 rosin core but it was .8 and didn’t work well for me at all. So i researched a little and bought kester brand at .4 and also bought flux. The next try my soldering connections came out beautifull!!!