Features: The paper pen can be used to rub the line out of texture or soften some stiff lines you draw to achieve light and shade effects. Not only create a hazy effect, but also used to be as a paintbrush to makes shadows and dark areas. Add soft subtle shading that can bring life like realism and dimension to your drawing. Suitable for use with all charcoals, graphite, pastels and colored pencils. Professional sketch paper pen for convenient and professional drawing. Specification: Material:PaperColor:WhitePackage List:12 x Paper Pen