Liquid Soldering Flux for Soldering Electronics and Printed Circuit Boards. The Brush is Built into the Cap for Convenient Application of Soldering Flux. Soldering Flux Residues after Soldering Do Not Cause Corrosion of the Printed Circuit Board and Components. Soldering Flux Residues after Soldering Do Not Cause Current Leakage. Residues of Soldering Flux Do Not Require Mandatory Cleaning after Soldering and Remain Neutral and Passive. Diamond Flux FN232 Liquid Soldering Flux can be Washed Off Electronic Printed Circuit Boards with PCB Cleaner If Necessary. Conforms to Standard J-STD-004B and ROHS. The Shelf Life is 2 Years from the Date of Manufacture Indicated on the Bottle Sticker, including the 2024 batches. ASIN B0CNS7V75D Size as the pictures shown Color Amber Material Plastic Item Weight 0.423 ounces Part Number FN232 Manufacturer Express 24 LLC Power Source crank Item model number FN232 Batteries Included No Batteries Required No Product Dimensions 0.87 x 0.87 x 2.99 inches Included Components Bottle with Brush in Cap, Instruction Item Package Quantity 1