Groove 'N' Grind Card and Keychain- V Syndicate Grinder Cards Go to amazon.com Related posts Best grinder card keychain FeatureClassic SeriesGrind Surface: MediumMedical Grade Stainless SteelFinger-Friendly & Easy to Clean.Portable, Fits in Wallet DescriptionThe whole Groove 'N' Grind Collection: features an improved medium to coarse blend grinding surface that looks like a spinning record.