Slot Diameter: 1.8-2.3cm: The suction cup shower head holder with adjustable slot to hold the existing shower head. Suitable for shower hose bottom diameter between 18-23mm. Not suitable for shower hose bottom diameter = 23mm. It is recommended to measure the size before purchasing. No Drilling & Easy to Install: You can install the adjustable shower head holder in 1 second. No drilling or screws required. Stable, waterproof and rustproof, the shower head holder will not damage your wall or leave marks after removal. Waterproof Material: The suction cup shower head holder is made of industrial-grade ABS plastic. Waterproof, rust-proof and corrosion-resistant. Sturdy enough for easy use in wet bathrooms for a long service life. Adjustable Angle & Height: The swivel design is convenient for you to adjust the shower head angle up to 70 degrees. Removable and replaceable suction cup. You can place your shower head or bidet sprayer anywhere you need. For high or low position, inside or outside the bathtub. Suitable for your wife, children or parents who cannot reach the shower head. Usage Tips: This powerful wall-mounted shower head holder works best for non-porous and smooth surfaces such as glass, mirror, ceramic tile, polished metal, plastic panels, etc. The suction cup will not work on a bumpy or uneven surface. Material: ABS Plastic Issued Quantity: 1