This suction pad lifter is designed to safely lift flat glass without scratching them. It has 2 replaceable rubber suction cups of 4-1/2” (115mm) diameter. It is designed to lift flat glass in the direction that is perpendicular to the surface , it has a maximum load capacity of 100 kg. It is simple to use: simply press down the lever on each suction cup and lift the glass. Then pull up the levers to release.