Fast-acting, low-voltage SFE Glass Tube Fuses are inexpensive fuses used in a variety of electronic and general purpose applications.It's a good idea to keep several of the most popular sizes of Sierra SFE Glass Tube Fuses handy to replace blown fuses while out on the water. They are typically installed using an in-line fuse holder. Originally used mainly in the automotive industry, SFE fuses are designed to specifications set by the Society of Fuse Engineers.1/4" diameterLength varies by amperage rating32V AC and DC ratingAvailable in commonly used amperage ratingsVisible indication of blown conditionUL-listedFive fuses per package