The micro detail brushes (green) have a small belly but a shorter and sharper point for extreme detailing. The all-media detail brushes (blue) have a slightly wider belly and longer tip, able to carry more colour for slightly larger colour fills and marks.
Both brush types use durable synthetic fibres that maintain their shape and spring, and can be used across watered-down paints, heavy body acrylics, enamels and lacquers