Material: Stainless steel
The suction is suitable for ceramic tiles, glass, mirrors, granite, stainless steel, acrylic, laminates and any non-porous surfaces with smooth finish. No suction on grout lines (suction cup diameter: 7cm / 2.8in) or porous surfaces, such as wood, unfinished marble, granite, wallpaper, natural stone (such as travertine), whitewashed walls, and any uneven surface WaitMake sure not to rust: we use high-quality food grade 304 stainless steel instead of chrome plating.