Purdy XL Blue Heron B.T. 2-1/2 in. Medium Stiff Angle Trim Paint Brush are great for all types of environments, both interior and exterior. These medium-stiff brushes are designed for latex and oil-based paints, primers and stains. Designed to be easily cleaned, the DuPont Tynex nylon and Orel polyester-blend bristles offer superior durability and abrasion resistance. The Purdy XL is our most verstile brush and handcrafted in the USA with global materials. Ideal for walls, ceilings and trim.