... per pc. 5.High quality. Black bristles with two times boild, with high quality We are manufacture, professional ... 49*46 0.0917 Hair 1.Pure black/white bristle, with two times boiled,60%-80%tops ... thinner in the cleanup process, choose brushes with natural bristles. If you are applying latex ... finish that is water-based, choose brushes with synthetic bristles as natural bristles lose their integrity ...