The suction cup made with 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 -Size:3.50X3.50X1.20cm/1.38X1.38X0.47in -Note: hole is about 0.5cm - Suction cups are perfect for a wide range of application, can be firmly sucked on windows, mirrors, glass. - Heavy duty 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 . - Multi-purpose suction cups are suitable for clean, flat surfaces, please make sure the surface clean and dry. - Easy to insert your flagpole and get your flag flying, ideal for use in stores, libraries, and on office desks. Package list: Suction Cups