• High-quality aluminum oxide material for excellent performance. • Wear-resistant, anti-static, and anti-clogging. • Easy to use with hook and loop system. • Designed to meet all your sanding and polishing needs. • Applicable to a wide range of materials such as wood, metal, rubber, leather, plastic, stone, and glass. • Grit 40# - 240# for coarse sanding, 320# - 600# for secondary sanding, 800# - 1500# for fine sanding. • Diameter of 125mm, suitable for random orbital sanders.