What is this?Glass tube time-delay fuses is a household electrical appliance protection device that provides protection for load or source circuits. What will I get?3.15A 250V Time delay cartridge glass tube fuse, Size: 5 x 20mm/0.2 x 0.8inch;Material: Durable glass;Package included: 10 piecesRated Current：3.15A；Applicable Voltage：250VIs there any advantages of the product?Durable glass protects your equipment, has better ability to withstand high voltage current, can provide more stable protection for complex current changes, and can reduce unnecessary frequent replacement. How to use it?Slow blow glass fuses require determining the proper size, voltage, etc. and ensuring they are securely installed and making good contact.