The Ateco Round Pastry Brush features white, natural boar bristles. The bristles are epoxy set in a stainless steel ferrule which withstands heat better than plastic or composite ferrules. It has a lovely lacquered wood handle. Brush is 3/8-inch round. Hand wash, recommended. By Ateco. Since 1905, Ateco has supplied fine restaurants and bakeries with quality built, specialty baking tools. Ateco products are internationally renowned for their high quality. When you use Ateco products, youâ€re not only enjoying quality craftsmanship, youâ€re also enjoying quality design; the products are a result of over one hundred years and four generations of innovation and development.