Lansky TB 2D2C Diamond Ceramic Four Rod Turn Box Stable and compact Two pre-set knife sharpening angles in the wood block 20 degree and 25 degree Two 5" long medium diamond rods (600 grit), and two 5" long fine ceramic rods (1000 grit) Two Pre-Set Knife Sharpening Angles In The Wood Block 20 Degree And 25 Degree 25 Degrees-This Is Used For Most Kitchen Knives And Provides A Sharp, Durable Edge 20 Degrees-This Is Used For Those Desiring A Very Sharp Edge Two 5-Inch Long Medium Diamond Rods, And Two 5-Inch Long Fine Ceramic Rods