Berghoff Diamond 10-Inch Dust Sharpening Steel Can also be used to repair small nicks in porcelain and crystal diamond sharpening steels are easy to use and have hand guards to protect your hand while sharpening 10-inch Diamond Dusted Steel Surface The only steel that not only straightens the edge but also sharpens to perfection Measures 15-1/4-inch by 2-1/2-inch by 1-inch