Introducing the Hook and Loop Sanding Block by POWERTEC. This premium sanding block was designed to provide a fast, long-lasting cut with a consistent scratch pattern for woodworking, metal working, autobody and painting applications that feature wood, metal, fiberglass, and plastics. The sanding block along with each sheet features a hook and loop design that allows for quick and easy changes, and reapplications. They offer an exceptional fit for hand sanders or push blocks, delivering good firm sanding action. Crafted with aluminum oxide sandpaper, they possess anti-clogging and non-loading properties for reduced material consumption. The premium quality grain is paired with an assorted mix of grit sizes - ready to maximize your work efficiency, while providing you with optimal sanding results. INCLUDED ASSORTED GRIT SIZES: 40-Grit (Coarse Sandpaper): Ideal for heavy sanding and stripping. 80-Grit (Medium Sandpaper): Good for smoothing surfaces and other standard sanding applications. 120-Grit (Fine Sandpaper): Excellent for removing small imperfections. 180-Grit (Fine Sandpaper): Perfect for final sanding and last step touches. 41-PIECE SANDING BLOCK KIT PACKAGE SPECIFICATIONS: Sanding Block Quantity: 1, Sandpaper Quantities: 10 of Each Grit, Backing Type: Hook n Loop, Grain: AO, Grit: Assorted.