The low profile and the durable construction of the file board give a very good control over the sanding process. The handle enables a flexible and ergonomic grip. The performance is excellent in combination with Mirka® Net stripes. The flexible board is adjustable for any concave or convex shapes. The board has yellow dot marks that indicate the straight shape and red dot marks indicating the maximum shape. Mirka® Hand Sanding Blocks are specially designed for sanding by hand in combination with Mirka’s revolutionary net-sanding products, although they can also be used with other grip abrasives. To ensure dust-free sanding the hand sanding block simply needs to be connected by hose to a dust extraction system.