No need to nail drilling， the product without adhesive， super electrostatic adsorption， the use of electrostatic adsorption with the principle of combining the vacuum adsorption， adsorption strong， please read carefully before use instructions.
Features:

1， long adsorption

2， no drilling

3， easy to move

4， environmental protection without trace

5， super load

6， waterproof and oil

7， repeated use

8， easy to install

插口的尺寸：上口直径24mm，下口直径21mm，一般的花洒都可以用的