An easy to use, compact, grinder solution to suit your daily needs. The Stash Glass Grinder is made of CNC light weight aluminum, and includes your standard grinder components such as a magnetized lid, middle chamber to hold ground herb, and a removable keef catch. What makes the Stash Glass Grinder unique is its engineered design to secure onto the lid of any regular mouth mason jar, so you can stash, grab, and go! Get your Stash Glass Grinder today with a choice of a 4 oz or 8 oz mason jar. FREE SHIPPING in the contiguous USA.