Sharpens and Hones, Realigns Cutting Edge: Extra fine 1200 grit (12 micron) monocrystalline diamonds are electroplated onto a steel base. This diamond sharpeing rod not only has the functions of traditional sharpening steel like realigning edge & removing burrs, it can also sharpen and touch up blades very well Suitable for ALL HARD Materials: Diamond is the hardest material in nature, so it can be used to sharpen all kinds of hard material tools that are not suitable for other sharpening materials, such as High Speed Steel, Ceramics, Tungsten Carbide, and so on Safety Design: The protective ring on the handle protects your hand from hurting when in use. The ergonomic anti-slip handle provides a comfortable and secure grip. Extremely Wear-resistant: Unlike most of other diamond sharpeners on the market, who use Polycrystalline Diamond, this diamond rod is constructed of monocrystalline diamond for exceptional durability and lifespan 3 YEARS of Commitment and Superior After-Sale Service: Sharpal, headquartered in CA, US with branches in Germany and Australia, ensures easy and cost-effective sharpening solutions. All products are rigorously tested to the highest standards