The 3” x 9” size of this Mirka® Hand Sanding Block makes it perfect for putty sanding because it reduces the risk of tilting during use. The easy-to-access 20mm hose connection and adjustable suction valve allow for optimized dust extraction and air flow that helps the tool move easily over the surface. The plate features 55 precisely placed holes to ensure effective dust removal, and the grip fastening system means there’s no time-consuming clamps to deal with. The soft, two handed grip is ergonomic and the bright yellow design means 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.