Witchcraft bushings are excellent hand made bushings which work amazingly on blackriver trucks, as well as dump trucks, bollie trucks, techdeck trucks, and more! Superb responsiveness and great pop, these vibrantly colored bushings add a touch of extra nice performance to any setup. They are custom shaped, very realistically like skateboard bushings. Each pack comes with four bushings, which is one set. They work great with washers too.