Abstract: A plastic buckle adapted to adjustably secure extremities of a web-like material including a frame-like body portion, fastening means at one end of said body portion for fixedly securing the buckle to one extremity of said web-like material and means for adjusting the opposite extremity of said web-like material including at least two transverse parallel bars positioned adjacent the opposite end of said body portion. Said adjusting means including two transverse parallel bars providing edges spaced from one another on opposite sides of a plane a distance not greater than the predetermined thickness of the web and lying in spaced planes perpendicular to said first mentioned plane.