You are buying set of 10 OEM used female Jcase fuses also known as cartridge fuses shown in the pictures with "0" like element. They are rated 25A, 30A, 40A, 50A, 60A for Chrysler, Ford, Lincoln, Jeep andDodge, Subaru, Volvo cars (will fit other makes too). Note, that the fuse mating side does not have any grooves,that sideis smooth.