Caydo 50 Pieces Glue Oil Acid/Flux Brushes Set, 1/2-inch Brush measures 6 inches long and 1/2-inch wide With durable horsehair bristles can hold more liquid and apply it more smoothly than other types of bristles Ferrule prevents bristles from coming loose and is made of tin, which resists water and corrosion Can be applied in a variety of materials, such as glue, flux, oil, pipe dope, and more An economical, throwaway-type brush that is great for brushing into small areas