The Ultimate Edge 12WT 12-Inch Master Chef Three Sided Sharpening Steel High quality durable poly handle with extra hand guard for safety This sharpener is 300 coarse, 600 medium, and 1800 ultra fine finish for all sharpening needs Premium grade, state of the art, diamond sharpening tool is made of Microcrystalline diamonds Perfectly designed and lightweight This product is made in the USA