Push and lock Industrial strength suction cup with swivel hook to accommodate different product depth that you can hang on Important: Suction cup will only mount on non-porous, smooth surfaces such as glass, mirror, polish stainless steel/metal, plastic board, finish marble, polished tiles for tight vacuum seal Damage free: No nail, no drilling installation Adjustable: Easily adjustable and reusable if needed in future to different position Built to hold: Push and lock industrial suction to hold up to 13pound Waterproof: Made of plastic and 100% waterproof Material: Plastic Dimensions Overall Height - Top to Bottom: 4" Overall Width - Side to Side: 2.25" Overall Depth - Front to Back: 1.75" Overall Product Weight: 0.12 lbs