Escoda has developed a new range of Pinstriping & Longliner Brushes, which are designed by Necksbreaker. The Signature & Detail Brush is ideal for detailing & signatures. The hair in the brush is Golden Toray, which is ideal for use with acrylics, inks, gouache, watercolours & many other mediums. Natural Squirrel Hair (synthetic on Amazon); Extremely soft with extremely great retention capacity