Enjoy Realistic Grinding Hand Feel with KARAT Hi-Stone Ramps, Perfect Scaled Down Sensation! Due to the Nature of the Material, Ramps Include Slight Imperfection is Normal, Minor chipping May occur after intensive use, but it will Not affect performance. You may sand off the rugged Edges with Fine Sand Paper, and it is Fully Water Washable when it gets dirty, use Kitchen Sponge Scrub for best cleaning result, Please Wipe Off excess water using a Clean Cloth and let it Sun Dry. *Each KARAT Ramps Comes with free Sticky Putty! PLEASE DO NOT DROP!