Check the listing for details. WOODRIVER Diamond Knife Sharpener. Condition: New. Listed at 36.48 USD. WOODRIVER Diamond Knife Sharpener, 166097, Overall size: 4" long x 2-1/2" wide x 7/8" thick; weight: 5.6 oz., Consists of two flats approximately 3-7/8" x 3/4" on opposite sides in 400-grit and 600-grit, The plate holds two rods: a 3-7/8" x 3/8"-diameter rod in 400-grit and a rod of the same length by 7/8" diameter in 600-grit, Ideal for sharpening pocketknives, kitchen knives, and touching up turning tools - both inside and out, We had a difficult time figuring out what to call our WoodRiver® sharpener because it’s so versatile, so we settled on Knife Sharpener. It consists of two flats approximately 3.93" x 3/4" on opposite sides in 400-grit and 600-grit. The plate holds two rods 600 grit rods - a 6mm x 100mm and a 12mm x 100mm rod. Both held in place.