Ideal for surface mount work and rework, solder paste provides a quick and easy soldering solution. Supplied in a syringe for easy application, simply apply it to the soldering pads, put your components in place and heat it with your soldering iron. Solder paste can go off in storage: we've found a local supplier so you can always be confident that the paste you get will be fresh. 63% tin 37% lead. Solder paste is best kept cool for long life and should be kept refrigerated. For this reason, please ask sales staff for this product, as it will be kept in refrigerated storage, not on display. Size: 15 grams Dimensions: 120 (L) x 15mm (Dia) Note: 1. NC Paste Flux has a refrigerated shelf life of 6 months at 4C (40F) to 12C (55C). 2. Allow the paste flux to warm up completely and naturally to ambient temperature (2 hrs.) prior to use. 3. Do not store new and used paste flux in the same container.