Pro Solutions Solid Round Tapered Polyester is our contractor-grade paint brush containing a blend of high-quality, durable filament that delivers sharp paint lines and smooth, professional-looking results. Ideal for use with all sheens of interior and exterior water-based, oil-based and alkyd paints, primers, stains, and clear finishes. Available in either flat or angular-sash, with hardwood handle styles including beavertail and standard.Pro Solution™ Contractor Angled Cut Sash Paint Brush, 1-1/2 Inch, Solid Round Polyester Bristle, Hard Wood Handle