This no-drill towel bar is fixed by vacuum suction cups and works only on smooth non-porous surfaces such as glazed tiles, glass and smooth metal. The included adhesive gaskets allow installation on slightly uneven surfaces, but it is not suitable for textured tiles, latex walls or other porous materials. Featuring vacuum suction technology, it can be securely mounted by pressing down and locking the lever. No drilling or tools are required; installation is easy and wall-safe, and it can be removed and repositioned repeatedly. The bar has a diameter of 0.8 inches, offering proper width to hang towels freely for faster drying. Made of ABS plastic, it resists corrosion and moisture, ideal for damp bathroom environments, and resists aging and deformation over time.