Today’s watercolor painter finds “The Flats” even more important than the rounds. When wet, they come to a magnificent razor’s edge, allowing the thinnest line, a broad wash or anything in between. The ferrules on the 7010 flats have a round base up to the 1" size and the larger sizes have a folded flat base. Steve works very big and was really pleased when we developed a brush that could hold so much color and retain the control. You won’t believe the edge!