Features 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 Cup Material: Aluminum alloy + rubber Vacuum Pad: 5in Maximum Working Load Lifting Capacity: Approx. 35 kg / 77.2 lb How 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 Cup