Hair: Red Sable Shape: Round Size: 9 Diameter of ferrule: 5.2mm Bristle length: 20mm Features: Round, for detailed work Notes: The shape of the brush tip is similar to the Series 8383, but while squirrel hair lacks firmness, red sable hair has excellent resilience. This is a new, unused item. It has been stored unopened since it was purchased new. The price tag is attached to the protective bag for the brush, but please understand that it is the old price. I am also selling other paint brushes, so please take a look if you are interested.