Review on 0.01in (0.3mm) Rosin Core Flux 2.5 Ultra-Thin Solder Wire - Lead Free Sn99 Ag0.3 Cu0.7, 50g for Electronics Soldering and Electric Solder by Ben Rodriguez

The thickness of the solder is about the thickness of a line on a piece of writing paper. is 1 inch).Two standard 0.7mm ballpoint pens for the size. Ideal for PCB work that is compact or requires minimal heat, you may need to use a magnifying glass to improve visibility and lighting during use. I hope this helps determine your hand size before purchasing.