0-373-20 Durite Pack of 10, standard 20A radio glass fuse, Rated 20A continuous, 40A blow rating, Fuse length: 20.0mm, Diameter: 5.0mm, Fuse rating: continuous rating for glass fuses are based on the fact they should blow at the amperage when the circuit is always on or plugged in, blow rating for glass fuses is based on the fact that the circuit is intermittent and therefore the fuse requires to heat up before blowing, Always check your equipments manual before replacing fuses to determine which fuses you require.