4Inch Sandpaper Pad Kit: Includes 100 sanding discs with grits from coarse to fine (40, 60, 80, 120, 180, 240, 320, 400, 600, 800; 10 each) and 1pc backing pad & 1/4inch drill adapter, meeting all your sanding needs from rough to fine polishing Material: Sandpaper discs made from premium aluminum oxide, these sand paper discs are flexible, wear-resistant, and long-lasting, delivering excellent finish for prolonged, efficient sanding Accessories: includes a 4-inch hook and loop sanding pad and a 1/4inch drill adapter. The sanding pad is designed to fit a 4-inch backing pad with a 5/8-11 thread, ensuring a secure connection Easy Installation: This 1/4inch drill adapter is designed for quick and easy attachment of sanding pads to variable-speed polishers, grinders, and household drills Wide Applications: Angle grinder sanding disc perfect for sanding, polishing, and rust removal on materials such as metal, wood, rubber, leather, plastic, stone, and glass Colour:As Shown Material:Alumina