General description 4-inch angle grinder sanding discs kit includes 100 sanding discs with various grits ranging from coarse to fine, along with a backing pad and a drill adapter. This comprehensive set is designed to meet all your sanding needs, from rough sanding to fine polishing. Technical specifications Includes 100 sanding discs with grits: 40, 60, 80, 120, 180, 240, 320, 400, 600, 800 (10 each) Backing pad size: 4 inches Drill adapter size: 1/4 inch Material: Premium aluminum oxide Measurement allowed error: +/- 1-3 cm Compatibility and accessories Includes a 4-inch hook and loop sanding pad Includes a 1/4 inch drill adapter for easy attachment Designed to fit a 4-inch backing pad with a 5/8-11 thread Installation Quick and easy attachment of sanding pads to variable-speed polishers, grinders, and household drills Usage Ideal for sanding, polishing, and rust removal on various materials including metal, wood, rubber, leather, plastic, stone, and glass Other information Note: