POWERTEC 8 in. PSA Aluminum Oxide Adhesive Sanding Disc: Each 9 in. sanding disc is made with premium grade aluminum oxide grains known for their superior grinding and durability. The PSA discs have a sticky back adhesive that allows for quick and easy installation or removal from your sanding pad. This wood sanding tool provides impressive results when working with wood, plastic, fiberglass, painted surfaces and non-ferrous metals (aluminum, lead, zinc, lead). 60-Grit - Suitable for shaping rough wood and/or removing previous coats and finishes. 80-Grit - Ideal for primary wood sanding, finishing, and removal of planning marks placed on workpieces. 100-Grit - This very often used grain is great for exposed wood surfaces and provides pressure to reduce tough stock. 120-Grit - It is suitable for most DIY applications and home workshops that require a final sanding before the job is done. 180-Grit - This fine sanding option is commonly used with bare wood and furniture manufacture. Also used for smoothing glossy painted surfaces in preparation for applying another coat. 240-Grit - Perfect for all types of materials. Often used for secondary grinding or smoothing wood and paint surfaces with less precise requirements. Sanding Abrasive Cleaning Stick: The POWERTEC 71002 Sanding Abrasive Cleaning Stick is designed to remove dust, debris, gum and other residue, bringing items like belt sanders and sanding disc back to life in an instant.