Without drill: This is self-priming installation, when installing, press the center of the suction cup firmly to release the air and lock the button clockwise . Extra strong suction cup: Our suction cup shower head holder supports a weight of 5 kg. The suction cup has superior flexibility and good airtightness. Wide range of applications: The shower holder can adhere to many smooth surfaces, such as marble, glass, metal , ceramics. The standard connection can accommodate almost all hand showers and shower hoses. 360 Rotation: Our shower head holder can be rotated 360 to meet your needs at any angle and can be rotated up and down. High quality material: ABS plastic bracket and PVC suction cup, moisture-proof and waterproof