These are standard 6mm x 30mm ceramic fast-blow fuses, available in a range of amperages from 1A up to 30A. They're brand new, made by UK Electrical (model F630), and work at 240V AC. Perfect for microwaves, other appliances, or commercial equipment where a quick-blow fuse is needed. Ceramic body handles heat well and is durable. Made in China. Whether you're fixing a dead microwave, replacing a blown fuse in a power supply, or stocking up for repairs, these are reliable and affordable. Always match the amp rating to your device's specs. No fancy features, just straightforward protection. Good for electricians, technicians, or handy homeowners. Keep a few spares in your toolbox—you never know when you'll need one!