CARDAS AUDIO Activated Rosin Solder Paste Flux for Quality Soldering 2 oz (55g) Jar The ideal soldering flux for electrical and electronic repairs Formulated for use with tin/lead and lead-free alloys Cardas Quality Activate Rosin Flux Soldering Paste helps solder flow smoothly Contains 2 ounces (55gram) in a "Hockey puck" sized Jar