A fastener for releasably securing a flexible liner about a peripheral rim of a supporting receptacle has a generally planar body with a first leg and an interconnected second leg defining an inwardly tapered elongated space therebetween. An offset and elongated rotation handle carried at one end portion of the body opposite the first and second legs facilitates rotating the body axially about an axis of rotation to wind a portion of an edge portion of the flexible liner about the first and second legs, and a portion of the rotation handle releasably engages with the tensioned flexible liner to prevent the unwinding of the flexible liner.