EMA Ramps Fingerboard Grind Box-From our fingerboard collection comes our standard grind box. Equipped with real 1/2" aluminum coping that is flush on one side which maintains a smooth grind. This grind box is made in the USA from high quality 3/8" birch wood that ensures this obstacle will last a long time. Smooth riding surface that won't slow you down great for all level fingerboarders provides endless entertainment to practice tricks