Features The main body is made of aluminium alloy, electropolished and odourless natural rubber, sturdy and durable. Each suction cup has the function of quick release and locking lever, and the black flip cover can easily lock the suction cup in the correct position. Widely Used Can be used as a glass lifter, especially for lifting, moving, pulling and holding glass window tiles, mirrors, granite and other materials. The maximum load capacity of the working load is approx. 35 kg and the vertical working load is 55-66 pounds. Before lifting and moving objects, make sure the suction is sufficiently stable. Specification: Item type: suction cup. Material: aluminium alloy + rubber. Vacuum suction cup: 5 inches. Maximum load capacity: approx. 35 kg / 77.2 pounds. Use: 1. Please make sure the surface of the suction cup is clean, dry and free of oil and dust before use. 2. Place the suction cup on an object with a smooth surface. 3. Pull the double handle up to vacuum. 4. The suction is now activated and you can move or lift objects. Package list: 1 x suction cup. Note: 1. Please use the glass suction cup on a clean, smooth and flat surface. 2. Before lifting and moving items, make sure the suction is sufficiently stable. Package List 1 x Suction Cup