1、 Easy to Install: NO nails, NO drilling,NO screws,NO marks,NO holes.Harmless on your wall, cleanly remove. Works with adhesive tape for long-term use. Free returns and refunds Application: suit for smooth surface, such as tile, glass, metal, plastics and painted wood, etc. Fit for kitchen shower bathroom or anywhere you need Rolling balls automatically adjust to each handle's thickness and grips it securely.Each one holds 6 - 10 pounds of weight, Holds with 0.8"-1.0" diameter handles Size: Square - 3.7*3.3*1.9".Round - 3.3"diameter Material: PVC, since the adhesion is so strong, there is a small risk of damage when apply on painted drywalls, wallpaper, etc, Holds heavy wet mops easily