Suction CupsFeatures:Durable metal handle.Fast attachment on smooth, nonporous flat surfaces.Red-line indicator warns user of any vacuum loss.Check valve allows repumping without loss of remaining vacuum.Release valve lever permits quick and complete release.Eligible for Powr-Grip Exchange Program.Supplied with protective carrying case.Specifications:Vacuum Pad: Flat, 8" [20 cm] diameter (model G0695)Load Capacity: 125 lbs [57 kg] per vacuum cup