Buytra 10-Piece Nylon Hair Paint Brush Set Professional Artist Paint Brushes Art Painting Supplies for Watercolor Oil Acrylic Painting Material: Nylon hair Size:17cm/6.6";Package Size:3.5cm * 17cm/1.3" * 6.6" Water Coloring Brushes,also can use for Acrylic Paint and Oil Paint Ideal for craft hobby school and home projects To clean your brushes, just run them under warm water to wash out the paint and use your fingers to gently reshape brush hairs