The synthetic brushes in the Amsterdam 600 range work exceptionally well with creamier types of paint, such as oil and acrylic. The bristles are mounted on the long ergonomic handle by a solid nickel-plated brass ferrule. The flat shape of these brushes makes them ideal for thicker, cleaner brushstrokes. The range contains 14 different sizes, ranging from 2 mm to 48 mm, allowing you to choose from a wide range of line thicknesses.