Introducing the POWERTEC 10-Inch PSA Aluminum Oxide Adhesive Sanding Disc. This multi-functional sanding disc offers you a practical and inexpensive solution to many of your sanding, polishing and finishing needs. Each 10" sanding disc is made with premium grade aluminum oxide grain which is well known for it's superior grinding power and durability. These woodworking sanding tools provide impressive results when working with wood, plastic, fiberglass, painted surfaces and non-ferrous metals (aluminum, lead, zinc, tin). Grit Types: 40 Grit Sandpaper - Suited for rough wood shaping and/or the removal of previous finishes and light coats. 60 Grit Sandpaper - Ideal for primary wood sanding, final shaping and removal of planning marks placed on work pieces. 100 Grit Sandpaper - Highly used grain is great for bare wood surfaces and applying pressure to work down difficult stock. 120 Grit Sandpaper - A good fit for most DIY applications and home workshops that require final sanding before the work is completed. 150 - 180 Grit Sandpaper - Commonly used with bare wood and furniture making. Also used to roughen glossy painted surfaces in preparation to applying another coat. 240 - 400 Grit Sandpaper - Perfect for all types of materials. Often used for secondary grinding or smoothing out wooden and painted surfaces with less precise requirements.