The Aerospaced 4 piece grinder is proudly Made in the USA and comes in a plethora of colors. It is a 4 piece all aluminum grinder which also comes with a sifter. The sifter keeps all your tiny flakes of herbs on the bottom so you're not wasting any dry herbs. Overtime, the herbs that get grounded tend to leave off flakes of herbs. That gets passed down onto the bottom level which is a screen to sift through. It also comes with a scraper to scrape the tiny flakes of herbs off for use.
This is definitely a must have vaporizer accessory to have to make sure you're giving your herbs a nice even heat distribution when you heat them up. Aerospaced grinders are known to be efficient which it utilizes the aluminum blades. The pattern of the blades are set to a specific measurement from each other to make sure it grinds it up really well. On top of all this, it comes with a Lifetime Warranty to make sure you feel confident in buying.