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 stick 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