AMTECH NC-559-V2-TF no-clean tacky solder flux (ROL0) 10cc kit USA 16150K ROL0 flux classification - rosin based, low activity tacky solder flux for tin-lead alloys No-clean flux - can be left on board for many SMT assemblies (manufacturers recommends cleaning flux residues to avoid board contamination or lower voltage on components with high impedance). Wide process window; High temperature compatible; Excellent wetting compatibility on most board finishes. Doesn't short components - highly praised by Advanced Reworks Community Genuine product made in the USA by Inventec Performance Chemicals. Distributed by AMTECH DIRECT - every shipment must include AMTECH Soldering Profiles card