The most convenient way to renovate your shower brackets. You don't have to remove the hole rail apart from the wall . Simply loose the knob and attach this hold to your rail then tighten. Done. This shower holder is so easily to DIY install , and this shower pole bracket fits probably all sizes(18~25mm diameter of shower rail). It can be adjusted in two dimensions: the position on the rail (height of the slider) and the tilt angle of the shower set.