Made from aluminium oxide abrasive, durable and anti-static. The grits are marked on the back of the discs for easy identification. Widely used in the grinding and polishing of metal and non-metallic materials of various complex surface rust. Including automotive, wood, artificial stone, plastic, glass, etc. Features: 50-Piece Multi-Grit Sandpaper Set - Our sanding discs set provides you with the multi-grit sandpaper you need. You will get 50 total orbital sander pads of 5 different grades including 60 grit, 80 grit, 120 grit, 180 grit and 220 grit. The higher the number, the finer the grit. High-Quality Construction - Our sanding pads are made from high-quality aluminum oxide abrasive, which is durable and anti-clogging. The aluminum oxide grain delivers a fast cut and a smooth finish to your project. Premium Back with 8 Holes - Back of napping makes grit removal and replacement quick and lengthens the life of each disc, 8 holes are designed for efficient dust extraction. Universal Compatibility - Our 5-inch (125mm) sanding disc is suitable for various universal track sanding machines on the market. Wide Applications - New sanding discs are ideal for grinding and finishing on metal and non-metal, wood, rubber, leather, plastic, stone, glass, and other materials. Specifications: Product: 50 PCS Orbital Sandpaper Material: Aluminium Oxide Sandpaper Size: Dia 125mm / 5 inch Holes: 8 Holes Grit Grades: 60# 80# 120# 180# 220# Color: Red Compatible Material: Wood & Stone & Metal & Glass Paper & Plastic & Painting Package Weight: 400g / 14.11oz Package Size: 13 * 13 * 8cm / 5.12 * 5.12 * 3.15in Package List: 50 * Sanding Discs (220/180/120/80/60 Grit)