A vest has a front, a back, a left side, a right side, and top and bottom edges. The support blade members are attached to opposite sides of the frame at a central location whereby each support blade member has a pair of distal ends extending from the central attachment point. The molten glass is remained with a predetermined weight on the molding die. Because the torsion bar is full floating, the operation of the tailgate hinges will not be impaired even if the torsion bar were to become fractured. The claw has a portion protruding inwardly from the base in a pressing direction, wherein the claw has an end which forms with the inwardly protruding section an obtuse angle. The invention also includes compositions comprising these polypeptides, conjugates, and nucleic acids; cells containing or expressing the polypeptides, conjugates, and nucleic acids; methods of making the polypeptides, conjugates, and nucleic acids; and methods of using the polypeptides, conjugates, and nucleic acids.