Purdy’s most popular brushes highly recommended for both interior and exterior painting projects and with all paints. The stiffness of the brushes makes them ideal for outdoor projects with different temperatures and humidity. A blend of Satin-Edge Nylon (Tynex) and Orel polyester are used and our special tipping and flagging process simulates the ragged ends of natural bristle, so the brush holds more paint and releases it without brush marks. Each XL brush has a unique hand-chiseled formulation for maximum paint lift and smooth “no drag” application. 3-3/16 inch length out 5/8 inch thickness Only solid, round, tapered Nylox (dyed nylon) and polyester filaments are used and our special tipping and flagging process brings our synthetic filaments as close to naturally flagged bristle as possible Hand-chiseled formulation for maximum paint lift and smooth "no-drag" application The stiffness retention of XL brushes makes them especially high-performing for outside painting under hot and humid climate conditions All paint and stain type Angular trim brush style Natural hardwood and fluted style handle Round edge and brushed copper ferrule All paints