Fallkniven Diamond Whetstone w/Tape 25 x 75 mm FK-D3T. This Knife blade Sharpening System from the experts at Fallkniven a combination diamond/ceramic whetstone that will handle all your sharpening needs. The DC3 and DC4 whetstones consist of a fine diamond stone (25 micron) and a very special ceramic stone made of synthetic sapphires. The advantage of these materials although they get worn will still keep their flat shape this is important when you sharpen your knife. For a great way to make sure your knife is will outperform the rest choose the Fallkniven Diamond/Ceramic Whetstone. Package Contents: Fallkniven Diamond/Ceramic Whetstone Fallkniven FK-D3T: Diamond Whetstone w/Tape 25 x 75 mm