We are offering Vacuum Lifter . General: No power source required. Ideal for the horizontal handling of nonporous sheet and plate material such as, diamond sawn or polished granite, polished engineered stone, all types of metals, plastics and fibreglass. An automatic self-cycling valve located in the bottom of the piston controls the vacuum grip-and release cycle. Features: Self-powered and self-cycling. Audio alarm system. Independently powered by a rechargeable battery.Vacuum gauge for visual warning of low vacuum.Specifications:Rated capacity: 300 Kgs (660 Lbs)Number of Pads: 1Diameter of pad: 350 mm