1. Vacuum Suction Cup: Specially designed for curved surface, this suction cup can easily lift heavy objects and flatten the surface.r 2. 220kg Lifting Force: With 8in large diameter and strong rubber pad, enables a great lifting capacity up to 220kg for easier lifting.r 3. Safety Red Line: The red line indicator warns the user of any vacuum loss. When a red line appears when lifting, just use the thumb to pump the plunger without removing the object from the surface.r 4. Easy Operation: The check valve allows re pumping without lossing residual vacuum, and the release valve stem allows rapid and complete release.r 5. Wide Application: Suits for lifting and handling materials such as glass, , plastics, engine valves, sheet metal, slate, etc.r r Specification:r Item Type: Vacuum Suction Cupr Material: ABS + Rubber + Metalr Function: Vacuum Suction Cupr Colour: Blackr Suction Cup Size: 8inr Maximum Lifting Capacity: Approx. 220 kg 485 lb.r Working Temperature: -20u2103~60u2103r r Package List:r 1 x Vacuum Suction Cupr 1 x Sealing Washerr 1 x Washerr 1 x Sealing Ringr 1 x Wire Hookr r Note:r Pay attention to lifting the adsorbed heavy objects to ensure that the adsorption is completed, so as to avoid the heavy objects falling during the lifting and causing injury.