The NSI Royal Precision Brush is made from pure kolinsky sable hair. This brush has been carefully tested by our top technicians for usability and comfort – making it one of our best brushes. The vented cap offers protection for the Royal Precision Brush during storage and travel, while allowing air circulation and acts as a handle extender. #8 round brush with a slightly crimped ferrule made from pure Kolinsky sable hair Ergonomically designed for perfect balance and comfort Vented cap offers protection for the brush during storage and travel while allowing air circulation and acts as a handle extender Because the brush always returns to a perfect point and has a firm resistance, it is great for detail work and perfecting the smile line