ITEM NAME:150pcs 250V 5x20mm 0.1A-30A Glass Tube Fuses Assorted Kit High Performance.Models Include: 0.1A, 0.2A, 3A, 4A, 5A, 6A, 8A, 10A, 15A, 20A, 25A, 30A. 150 Glass Tube Fuses. We'd like to settle any problem in a friendly manner. Designed with 5 x 20mm glass tube. A type of low resistance resistor that acts as a sacrificial device to provide overcurrent protection, of either the load or source circuit.