This brush has truly been missing from the marketplace for years. Black Squirrel has been called the perfect watercolor tool. It is softer than Sable, points as well, holds more liquid and is easy to control. As it releases color, it loses some of its snap, so consequently it is better to use with a wet technique Although less expensive than Sable, it is considered by many to be a better brush.
The pictures below are offered as shape references. They are not actual size.