Wood's Powr-Grip Double 4" Cup Vacu-Lifter For use in lifting glass, stone, plastic, sheet metal and other heavier nonporous materials. Attach to surfaces by pressing down on suction cup. Fingertip bar-release makes vacuu-lifter removal quick and easy. 10" [25 cm] aluminum handle allows ample room for positive gripping. Double 4" [10 cm] suction cups provide a 50 lbs. [22 kg] lifting capacity