The 80 x 230 mm size of this Mirka Hand Sanding Block makes it perfect for putty sanding because it reduces the risk of tilting during use. There’s an easy to access 20mm hose connection and an adjustable suction valve to allow for optimised dust extraction and air flow and help the tool move easily over the surface. The plate features 55 holes precisely placed to ensure effective dust removal and the grip fastening system means there’s no time consuming clamps to deal with. There’s even an ergonomic, soft-feel, two handed grip and the eye catching design in bright yellow mean it’s always easy to find! 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.