The new way to grind! The 420 Grinder is a totally flat, credit card sized grinder that fits in your wallet. It is the most practical,convenient and discreet solution for grinding your herbs anywhere! The card features a finger friendly grinding surface to grind your herbs to the ideal consistency, and can be used to scoop up smaller bits of your buds or stray stems, tighten your roll and even crush your stuff. The grinder card is made from medical grade stainless steel, making it durable and also easy to clean. Then after your done, slip your card back into it's resin resistant sleeve.