Wooster 4156 4-Inch Ultra PRO Jaguar Extra Firm Wall Paint Brush - 6-Pack for Professional Painters & DIY Home Improvement Projects

For jobs that require extra strength, the newest and toughest of the Ultra/Pro line is Extra/Firm. NylonPlus filament, exclusive to Wooster, allows for superior stiffness and cut-in control. It's able to maintain a sharp edge even in hot, humid conditions. Made from 100% nylon, Ultra/Pro Extra-Firm is very durable, and cleans much more easily than brushes that use polyester to achieve extra stiffness. Square steel ferrule, chisel trim.