Red Line Indicator: A red line indicator warns the user of any vacuum loss. When the red line appears when you lift the suction cup, just pump the plunger with your thumb, no need to lift the cup off the exterior.
Strong Suction Cup: This suction cup has a lifting load range of 130 to 520lb for quick attachment on flat, non porous surfaces.
Convenient to Use: This is a very handy vacuum suction cup, and the check valve allows repumping without losing the remaining vacuum.
Rubber Material: Durable, odorless, strong rubber suction pads and ergonomic handle, work in low temperature and hold vacuum for 6 hours.
Wide Application: Suction cups are ideal for lifting and moving materials such as glass, tiles, aquariums, plastics, engine valves, furniture, metal, slate and appliances.
