The Techni-Pro TNP100081EA is an FLXPEN flux remover pen, low solids, no-clean, 10 ml. It's a high-quality 10-ml pen applicator with a specially designed felt tip. For rework and touch-up of SMT, SMD, and through-hole solder joints Suitable for automotive, computer, telecom, etc. Flux flows smoothly for consistently secure and uniform solder connections with no mess. Rosin residue is non-corrosive, non-conductive, non-clean, moisture-resistant, and fungus-resistant.