Abstract: In combination, a support belt and a buckle having a frame with a pair of opposed forward and rearward transverse members, the latter being secured to one end of the belt. The other end of the belt is adapted to pass through the frame and has means thereon for engagement with the outside of the belt after such passage. The frame has a slidably, rotatable tubular member movable towards and away from the forward transverse member and the tubular member has a pair of opposed planar faces joined by a pair of opposed curved faces, said faces providing a pair of opposed, relatively sharp edges.