The Space Case Grinder Small is an authentic Space Case branded herb grinder made of polished aluminum. Back in the day, these were the only legit high quality grinders, and not much has changed. I still have my Space Case I bought in 2004, no broken teeth, no metal shavings, lots of use and abuse. The Small has a diameter of about 2" or 50mm, a super strong Magnetized lid and is made from durable anodized Aluminum. Made in USA	