Features: Material:The brush of the oil painting pen is made of quality nylon smooth and without burrs making it very convenient to use. Painting Brushes Set:The package includes 12 oil painting brushes that can meet your different painting needs. Easy to Clean: After using the brush for acrylic oil or watercolor painting it is very convenient to wash them with warm soapy water to reshape the brush tip. Air dry and store. Versatile: The brushes allow you to do fine detailing and art painting precisely to reach tight small spots or tiny points. Works well with oil watercolor acrylic enamel cel-vinyl gouache paints. After-sales Service: If you have any problem please contact us immediately we will help you solve it as soon as possible. Specifications: Material:Nylon Wool + Aluminum Tube + Birch Wood Length: 18-19.3cm Weight: 58g/Set Application:Watercolor Acrylic Oil Painting Notes: Please note that due to the influence of light and screen slight chromatic aberration is acceptable. Please allow slight measurement error due to manual measurement. includes: 12 *Painting Brushes