SharkSPA 2 PCS Universal Slider Showerhead Holder - Twin Set Anti-Skid Adjustable Shower Head Holder Slider Fits Any Size Any Knob Type On Bathroom Rail Pipes or Shaft - Beautiful Smooth Chrome Finish - Easy Installation Without Assembly Set of two elegant and minimalistic design shower head holders Durable and Top Grade Material: anti-rust and anti-tarnish; elegant chrome finish coating Rotatable and Adjustable Assembly: attach, position, or detach with just a turn of a screw type knob Fits Shower Rail Diameter 0.7"~1.0". Fits Shower Handle Diameter 0.7"~0.9" Stable and Reliable - securely fastens onto shower pipe or rail without special tools