Get the coarse stone from Ron for 17.00 plus shipping.I bought a used KME and was having trouble.I called Ron at KME and he stopped his work,told everyone to take a break and talked with me 15-20 min trying to help me with the BH sharpener.He advised to get the coarse stone and it would shave you,then to use any fine stone to polish the new edge.I was amazed when I tried this.all kinds of heads were shaving sharpe on doing this.abowyer,Stos,phantom,Eskimo.this stone needs to come with the kit as its the best I have ever seen and I've been sharpening heads over 30 yrs.Ron took me own personally to help even though I had bought a used one.you want believe this guy helping you out.great product.If you have trouble call this guy, he is the real deal.