10 Pieces Shower Flow Restrictors Shower Head Flow Reducer Water Flow Limiter Set 1.5/1.8/2.0/2.5/3.0 GPM for Water Saving Fixed or Handheld for Bathroom, Toilet, Kitchen(14.3 x 13.85 x 5.2 mm)

Very nice option to control the water output of your rain shower head. Took me 3 tries to find the right one that put out enough water and still conserves more than running it without it. Once you got one in, it's a little difficult to get it back out, but needles nose pliers and a cake tester did the trick.

I live in a rural part of Vermont and have a well for water. I bought a new shower head and this item will now allow me to take longer showers. What a useful item. No matter what I am looking for Amazon has it at affordable prices, and Super fast shipping. This item will fit just about any model shower head.and a breeze to install.

These shower head restrictors are small. They may be for the handheld shower. They are a sloppy fit for the showerhead pipe coming out of the wall. I centered it in the shower head and screw it back on the pipe. It stayed in place and it reduced the flow some. I may get the other size in the future. I did not take off a star for it being too small. I should have measured. I did take one off for the description not explaining what it is designed for. The pipe on a shower is a standard size.

First, inner diameters vary from one application to another. I bought two sizes, thinking it was probably the larger one. It was actually the smaller. The fit was perfect for a shower head junction and one can determine GPM flow that works best via trial and error. Recommend.

I am puzzle as why this shower flow restrictor get such high rating? It won’t even fit my Grich shower head. I tried to put it in a Waterpik shower head and it won’t fit either, Return to Amazon.

A dew different sizes are included to give you the perfect water flow rate

Was easy to find the color guide on the internet (It's the 21st century people)

Worked perfectly. Tested and the flow rate was correct.