A dual grit ceramic puck stone with sapphire ceramic blend on one face with a coarser grey face for a dual grit, perfect for field sharpening axes, machetes, and other tools. The grey medium face will rapidly erase scratch marks from a file with a 240 grit, while the arctic white 400 grit side will bring the edge to a hazy mirror finish that easily shaves. Readily absorbs and retains water, with a thin film on the surface to keep the pores of the stone free of metal fines. Cuts quickly, yet leaves a fine finish.