I purchased this stone to complete my Shapton Pro set, as I also own a pair 1000 and 5000 grit stones. As I am new to the sharpening world, I was a little unsure if I needed a lower grit than 320 but I am happy to report that I was able to successfully grind out a couple of small chips on a couple of my knives. I definitely feel like I will be using this stone first for all of my sharpening needs, whether or not this is any damage on the blade. I feel like my knives have never been sharper than when I started with this stone.