This can come very handy for a number of reasons.
First of all, you don't have to use as much herbs when you are using your Cano on your own. The Easy Valve chamber is decent size and using a chamber reducer makes it a lot more suitable for a single user.
Another benefit is to be able to use the Storz & Bickel dosing capsules that fit perfectly into the chamber reducer.
All parts you need come in this kit:
1 x Filling Chamber Reducer (approximately 15mm in diameter)
2 x Normal Screens
1 x Dosing Capsule
The reducer does not just slide into the chamber, but you have to take out the wall of the Easy Valve chamber and completely replace it wiht the reducer, including the screen.
It is quite easy to put in, however not easy enough to keep changing them back and forth. So if you would like to use both, a full sized and a reduced chamber on a regular basis, the most convenient solution would be to get another Easy Valve Chamber at the same time you are getting this reducer.
That way you can have one full size and another one with the reduced chamber size and use them as you need them.