The suction cup made with metal and PVC material, which is solid, does not deform, and can withstand a lasting service life. The structure is stable, with strong sucking capacity, great for daily use. Widely used, suitable for windows, mirrors, glass tables, or any other clean and smooth surfaces. Features -Color:Transparent -Material:PVC,metal - Size: 6.00X6.00X3.00cm/2.36X2.36X1.18in -Thread: M5 - Made of transparent metal and PVC material for a sleek and modern look. And the screw in solid to use. - Suction cups with screw are perfect for a wide range of application, can be firmly sucked on windows, mirrors, glass. - Thread suction cup design assures secure and lasting holding capacity, and can be used for lasting time. - Providing ample supply for your needs. And easy to install and use, saving you time and effort. - Multi-purpose suction cups are suitable for clean, flat and non-porous surfaces, please make sure the surface clean and dry. Package list: 30 x Screw In Suction Cups