Universal Fit:The sanding paper is suitable for a wide range of materials including wood, metal, and composites, making it a versatile addition to any workshop or DIY project.Unique Benefits:Surface Preparation: Sanding discs are often used for surface treatment of materials such as metal, wood, and plastic, such as removing surface roughness, removing oxide layers, scratches, etc.Finishing: In the final stage of grinding, a finer sanding disc is used for polishing to obtain a smooth and delicate surface.Deburring: Remove burrs and edges on metal, plastic and other parts to improve product safety and appearance quality.Special Features:Abrasive Material:Aluminum Oxide Backing Material:Paper Base Grit:120 Hole:15 Package Quantity:50(+/-2%) Diameter 1:150mm/6" Diameter 2:18mm/0.71" Diameter 3:10mm/0.39" Color:Red Installation Guide:Depending on the model, it may feature hook-and-loop or PSA (pressure-sensitive adhesive) attachment for quick and easy mounting and removal.What You Get:Package includes 50(+/-2%) pcs sandig discs