Can someone let me know if I can just replace the little part that holds (and makes the head adjustable on the rail + pivots the direction of water) and is attached to the rail? If so, how do I do that? I've tried to undo it and I can't work out how to take this bit off. The outside is cracked as well, the showerhead was constantly falling down.. there is more to this part that I have removed.
The other one that you see has a cracked thing that holds a showerhead in place. Can that be just be replaced?

