A connector plug has a connector plug body, a slider supported on the connector plug body and a jig attachable to the slider. The jig has an insertion portion which can be inserted into a slot of the slider and an operation portion extended from the insertion portion. The insertion portion has first and second insertion portions separated from each other by a predetermined distance. The slider can be moved in the detaching direction when the jig is moved in the detaching direction in a state that a first locking portion of the first insertion portion and a second locking portion of the second insertion portion are locked to the inner wall of the slot, and the locked state of the first locking portion and the second locking portion can be released when a force is applied to the operation portion in an inside direction to shorten the predetermined distance.