The CRL Single Grip 220 Lb. Glass Grippers allow the carrying of large sheets of glass or sheet metal in an upright position. Just two people can easily lift and position these hard to maneuver materials using only one hand, leaving the other free to guide and position into place. The serrated surface pads hold tightly without slipping or damaging the glass surface. The great feature of these Grippers is that the heavier your material, the harder the grip gets.