No need to drill: put it on the surface and press the safety lock switch . Not affected by water vapor and wall immersion. Other humid environments can also be used in the bathroom. Long-term use: The adsorption film has memory properties. When changing the installation position, you only need to rinse the vacuum cleaner under running water. After drying, the nipple can be used again. Super adsorption power: stronger adsorption power than traditional vacuum cleaners. The suction cup with vacuum lock ring effectively prevents the suction cup caused by the voltage release pressure, and firmly locks the vacuum. [No need to replace] The plastic suction cup handle is fixed like a screw to avoid dangerous support when entering and exiting the bathtub. Anti-deformation, anti-aging, oil resistance, acid resistance, etc.Scope of application: suitable for glass doors, toilet lids, windows, drawers, etc. Safe and durable, but stylish enough Delivery Quantity: Pack of 2 Product color: as pictured Notice: *Actual color may be slightly different from the image due to different monitor and light effect *Please allow 1-3cm deviation due to manual measurement