da Vinci SYNTHETIC BRISTLE mottlers made with a new synthetic fiber, similar to traditional hog bristles but more resistant and easier to clean. Ideal for oil and acrylic, priming, gesso, underpainting, varnishing, graining and transparent painting. The brushes in Series 2429 feature a rust-proof ferrule produced using the DUROPLUS process. The handles are not coated. Certified green manufacturing with sustainable wood handles handmade in Germany at our family owned factory since 1890. Vegan.