The product is a lot of 2 Bussmann Fusetron FRS-R-1 1/4 Dual Element Time Delay Fuses. These fuses are designed with a snap-in mounting style and a cartridge fuse body type. Made of brass with a black color, they are suitable for interior use and have a voltage rating of 551-600V. The fuses feature a Type D tripping characteristic, time-delay/slow-blow operation method, and are current-limiting. Manufactured in the United States, these electrical fuses are suitable for use in any room.