This amulet of "Yellow Wheel of Manjushri" (Jamyang Serkhor) or the "Wheel of Quad-Birth" (Kyedpa-Shiden) is an all-purpose amulet and is useful for avoiding misfortunes, health hazards, obstructions, evil spirits, bad-luck etc.
It is a readymade amulet and can be used in general by anybody and it is to be worn around your neck. It can also be hung on the door of your house or kept in your car, to avoid bad luck, evil spirits, accidents etc.