I bought 3 of these in different colors, some people have complained that they get clogged fairly quick or drag your hit, I place mine after the Ash Catcher, there's very little drag and it never gets clogged. I have also tried all three together and it works great. The key is to have a Ash Catcher with your bowl, before the coils.

This makes the hit chill

It hits well when it doesn’t get clogged after 3 bowls. Even cleaning it out with each use it still doesn’t prolong the inevitable.

It chills great but clogs easily. My easy fix was combining it with the carbon filter to catch ash and reduce gunk