① This product is only applicable to 30mm diameter slide bars. ② By pressing the button to release the lock, you can move it up and down smoothly without it being too tight, allowing you to use it at your desired height. ③ The shower angle can be adjusted steplessly through 360 degrees, allowing you to fix it at the optimal point. ④ Although it seems to have a simple structure, it is sturdy without any play. It has the same functionality as the genuine product. Purple