Chef'sChoice 464 Pronto Diamond Hone Manual Knife Sharpener For Serrated and Straight Knives Diamond Abrasives Easy and Secure Grip Compact Design Made in USA, 2-Stage, Black 2-stage manual knife sharpener for straight-edged and serrated knives Coarse finish establishes a sharp edge; refining stage hones and polishes Shape-holding diamond-wheel abrasives in both stages; works with any type of alloy Optimal bevel angle control for a 20-degree edge; no water or oil required Measures approximately 10-1/2 by 5-1/5 by 7-1/2 inches