F dick sharpening steel. Main Menu. Email a Product Specialist productspecialist sharpeningsupplies. Phone US: Works well for German steels and highly recommended for Japanese knives. Dick 14" Sapphire Cut Round Steel. Because of the overall oval profile, each grit type can be used with no fear of accidentally contacting the other. Our recommendation is to work with a very fine stone to rebuild your edge and a fine-cut F. Great to use on German and American knives.