I think everybody will recognize these little inline fuses. They were pretty commonly used in a variety of devices, especially automobiles. But times have changed. Automobiles now universally use the blade type fuses which are a lot easier to replace than the little glass fuses. So I need some for the Cessna and figured I would go to the hardware store. I remember the display where they had dozens of different ratings nicely displayed so you could easily take your pick. Well, the hardware store had some on rack cards, but not very many and not of the rating I needed (1/2 Amp). So I went next door to the auto parts store, but the same situation there. Finally I did a little Bing searching and found that Home Depot carries a nice selection so I ended up there and found what I needed. Times have changed.