SeaSucker Cascade Hooks Black. Simply attach the built-in vacuum mount to a smooth rigid surface like a windshield or window and hang bags and totes from the cascading series of hooks. The powerful vacuum mount allows for a maximum load of just over 100lbs. The hooks are made of high strength high durability HDPE for a lifetime of use. Specifications for SeaSucker Cascade Hooks: Manufacturer: SeaSucker Size: One Size Package Contents: SeaSucker Cascade Hooks SeaSucker SM8115B: Cascade Hooks Black