Feature:1. The main body is made of aluminum alloy, electro-polished and natural odorless rubber, strong and durable.2. The maximum working load lifting capacity is about 77 lbs/35 kg, and the vertical working load capacity is 55~66 lbs.3. Each suction cup has the function of quick release and locking lever, and the black flip-down cover can easily lock the suction in the proper position.4. Widely used, can be used as a glass lifter, especially for lifting, moving, pulling, and holding glass window tiles, mirrors, granite and other materials.5. Before lifting and moving objects, make sure that the suction is sufficiently stable.Specification:Item Type: Suction CupMaterial: Aluminum alloy + rubberVacuum Pad: 5inMaximum Working Load Lifting Capacity: Approx. 35 kg / 77.2 lbHow to Use: 1. Before use, please make sure that the surface of the suction cup is clean, dry and free of oil and dust.2. Place the suction cup on an object with a smoothly surface.3. Pull the double handle to the upward position to suck.4. The suction is now activated, and you can move or lift objects. Package List:1 x Suction CupNote:1.Please use the glass suction cup on a clean, smoothly and flat surface.2.Before lifting and moving objects, make sure that the suction is sufficiently stable.