2-1/2", Polyurethane Stain Brush, 100% Blended Brown China Bristles Used For Applying Oil Based Finishes Such As Minwax Polyurethane, Polyshades & Helmsman, Use With Minwax Oil Based Polyurethanes & All Other Oil Based Polyurethanes, Package Is Color & Size Coded For Minwax Polyurethane.