Diamond Whetstones (800#, 1500#, 2000#, 3000#)

My Benchmade knives are more sharp now than when bought them new. One i dulled out when it was new cutting card board boxes down at work. Now im 3 weeks into the last sharpening and its just now starting to lose its edge. But still cuts nice.

Makes sharpening knives ridiculously easy! Sharp knives cut so much better.

While the surface material is fine, the entire stone does not fit in the device very well. I'm also frustrated that this sharpener does not handle knives other than large kitchen knives very well. I regret spending that much money on this.