This is a convenient tool.8'' in diameter heavy duty vacuum lifting plates. Fast attachment on flat, nonporous surfaces. Excellent for lifting and moving materials like glass,tile, aquarium, plastics, engine valves, furniture,metal, stone slabs, and appliances.
Durable,odorless,strength rubber suction cup pad and ergonomic grip ,which could works in -20℃ to 60℃ temperatures, and keep the vaccum for 6 hours.,This tool has a lifting load range of 130 - 520lb (maximum).
Red-Line Indicator Warns User of Any Vacuum Loss. When the red line appears while lifting, simply thumb pump the plunger without removing the cup from the surfaces.
Check Valve Allows Repumping without Loss of Remaining Vacuum. Release Valve Lever Permits Quick and Complete Release.