Specifications:Length: 30cmMaterial: 304 stainless steelFinish: BlackInstallation Method: No drill gluePackage Includes:-1Knief Holder Quick and easy assembly-All mounting hardware included.2 Installation Methods: NO Drilling: Powerful drill free glue to hold wall mounted bathroom shelves in place. The drill free glue featuring strong, ensuring durability and dependability. Bathroom shelf organizer adheres securely to any smooth surface. Yet it's easy to remove whenever you want. Where are suit for Drill Free Tech -Glazed tiles-Uneven tiles-Glazed marble-Uneven marble-Glazed glass-Dull polish glass-Glazed metal-Uneven metal-Wooden wall Where are not suit for Drill Free Tech -Oil paint wall-Parget wall-Cement wall-Wallpaper Notes(Very important for drill free with glue mounting method, If not the installation will result in FAILURE): -Please follow the "Product Install" displayed in image area step by step. -Clean and dry the wall before install. -Holding the product no less than 5 min. -Waiting for 72 Hours to use after the product glued. Note: Due to the light and screen setting difference, the item's color may be slightly different from the pictures. Please allow slight dimension difference due to different manual measurement.