Abstract: A buckle is used for connecting the opposite ends of a strap together, one of the ends having a plurality of longitudinally spaced apertures. The buckle comprises a base member, and a cover member lockingly engageable with the base member to cover the same. The cover member is adapted to be attached to the other end of the strap. A lock tongue is provided on the base member for being selectively inserted into one of the apertures to retain the one end of the strap against movement.