A magazine includes guide portions formed at a pair of side walls to be opposed to each other for introducing to guide a portion of a nail shaft portion, an opening portion formed on a base end side of a nose portion relative to the guide portion of one of the side walls, a first attaching portion formed on a front end side of the nose portion relative to the guide portion of the one side wall, a second attaching portion formed on the base end side of the nose portion relative to the guide portion of the other side wall, and a notched portion formed on the front end side of the nose portion relative to the guide portion of the other side wall.