LA-CO® Silver Brazing Flux, Composition: Boric Acid, Potassium Hydrogendifluoride, Potassium Tetraborate Tetrahydrate, Potassium Fluoride, 1 lb, Paste, White, Odorless, 8 - 10, 1000 - 1700 deg F Working
- Powerful cleaning action reduces waste of expensive silver solders