JT&T Products; SFE Glass Fuse is fast-acting for maximum protection. SFE Glass fuses are designed to specifications set by the Society of Fuse Engineers. Voltage rating is 32 volts. All are 1/4 inch in diameter, but vary in length according to the ampere rating. Amperage rating is stamped on end cap to ensure accurate fuse replacement. This barrel style, glass tube fuse is easy to replace and standard for automotive and electronic applications. JT&T Products offers a complete selection of fuses, including Smart Glow!