· Premium 304 stainless steel construction offers excellent corrosion and rust resistance for long-lasting durability. · Includes 1287 pieces across 21 sizes: SAE (#6-32 to 1/4 inch) and metric (M3 to M8), each with matching nuts and washers. · Comes in a labeled portable box with detachable partitions for easy organization and quick access. · Ideal for precision machinery, household appliances, furniture, electronics, toys, lamps, bicycles, and more. · Phillips pan head screws provide secure fastening; metric & SAE options cover a wide range of projects.