Big Horn 13022 1/2 Inch Width Flexible Natural Hair Bristle Tin/Metal Tubular Ferrule Handle Acid/Flux Brushes – (Qty – 36). Permanently bonded natural hair bristles. Disposable Shop Brushes are an economical tool for Hobbyists and professionals, When applying a variety of materials such as Glue, Acid, Flux, Oil, Paint, Paste, Grease, Pipe dope, Zinc primer, for either Soldering, Touch-up, Dye, Spreading, Dusting, Cleaning, Arts & Crafts, Woodworking, Woodworking projects, applying Wood Glue, Epoxy Glue, Epoxy hull repairs, Cleaning tasks, working well on epoxy resin projects Or any other general-purpose applications.