The rosin makes the components very easy to weld, and the effect is obvious. NOTE: As a result of metal and air will be formed after a layer of oxide film, the higher the temperature, the more serious oxidation. USAGE: This product is suitable for welding of general instrument, instrument, copper, tin, iron and so on. Fitment:Fit For Toyota Tacoma 2012-2015. Replaces Part:# 52502-04900 52503-04900,TO1089118,TO1088118. Package List Hilitand 10pcs Solid Rosin Paste Soldering Flux for Welding Removing Oxidized Coating , Flux : : Tools & Home ImprovementFUNCTION: Rosin is the flux used in the welding of electronic circuits in which the oil from the trunk of a pine tree is into water at high temperature, and the dry knot becomes a massive solid (without a fixed melting point). HIGH QUALITY 3.52oz/100g Solid Rosin Solder Flux Paste for Soldering Iron Tip Cleaning, Repair, and Welding : Buy Online at Best Price in KSA - Souq is now It is very helpful for the welding of circuit board. Flux is a special material used to remove oxide film, also known as flux. high-grade: It has high purity super rosin, it's very transparent and bright color. FUNCTION: Rosin is the flux used in the welding of electronic circuits in which the oil from the trunk of a pine tree is into water at high temperature, and the dry knot becomes a massive solid (without a fixed melting point). Soldering Paste 10pcs Solid Rosin Paste Soldering Flux For Welding Removing Oxidized Tip Tinner