The Easy Valve Filling Chamber Reducer sits inside of the Easy Valve Filling Chamber and allows you to load less material while still achieving even vaporization. You can also use the included dosing capsule to have a session ready whenever you are and make cleanup even easier. The dosing capsule is the same one that is included with the STORZ & BICKEL Crafty and Mighty vaporizers and can be used interchangeably between them all.