The Phoenician Grinder bumper ring kits includes a set of two bumper rings designed to fit your Phoenician Grinder like a glove. 

Offering added grip & a layer of protection for your favorite herb grinder, these bumper rings act like a cell phone case for your grinder, keeping it in perfect condition. Prevent scratches & other physical damage that could void your warranty. Plus, you get a much better grip for grinding your flowers to perfection. 

The Bumper Rings are available in 3 sizes to perfectly fit the small, medium or large 2 piece and 4 piece grinders from Phoenician.