The Suction Cup Feet give your Tuff Mount another attachment option for smooth, non-porous surfaces. They are a good choice when magnets are not the right fit, or when you want a temporary mounting setup on glass, metal, countertops, and other smooth surfaces. Each suction cup uses a hand-pump vacuum design to create a strong hold. Press the pump to build suction, then release the vacuum tab when you are ready to remove it. The rubber cup material helps provide grip while protecting the mounting surface. This set includes four suction cup feet. Product Details 4-pack suction cup feet 4.5 in. suction cup diameter Hand-pump vacuum design Designed for smooth, non-porous surfaces Works on glass, metal, countertops, and similar surfaces Suitable for vehicle, boat, RV, and camp setups Rubber suction cup material Removable and reusable Pad protectors included Best For Starlink Mini users who want a temporary, non-magnetic mounting option for smooth surfaces such as vehicle glass, sunroofs, boats, RVs, countertops, and other clean, non-porous surfaces. Important Note Suction cup performance depends on the surface condition. For best results, use on clean, smooth, non-porous surfaces and check the hold regularly during use.