A clip is provided which allows the lengths of paired leg portions extendable and contractible in the same manner as a pantograph to be shorter in a state where the clip is mounted on a silencer, than in the conventional art. Third hinge portions which connect the second leg portions of the opposed leg portions to the common connection leg portion at a side opposite to first hinge portions which connect the insertion base portion to the first leg portions are formed at an inner side so as to be closer to an insertion axis for a hole of the silencer than the first hinge portions, whereby a folded state is obtained with such a small angle that each first leg portion and each second leg portion are in contact with or close to each other.