The product is a lot of 9 Edison time-delay class RK1 current-limiting fuses, each with a safe operating range of 4.5 amps. These cartridge fuses have an on/off operation method and are suitable for interior use in electrical equipment and supplies. With a slow-blow time-delay fuse speed and current-limiting classification, these fuses provide a reliable and safe solution for protecting electrical circuits in industrial and commercial settings.