<li> 5mm x 20mm Snap Glass Fuses </li> <li> In order to ensure that you order the correct fuse, check the fuse details on the metal ring of the fuse you want to replace. </li> <li> V = voltage / A = A / mA = milliampere. </li> <li> You can also T or F T = Time lag delay or sluggish. </li> <li> F = fast or fast fuse. </li> <li> If there is no T or F, it can be assumed the backup is a quick / fast backup. </li>