I am amazed at how sharp I can make knives. I have sharpened knives professionally and this is the best steel I've ever used. WE have two sets of steak set when I found this steel at the Buck website knives that we received as wedding gifts 47 years ago. I had given up on them and was online shopping for a new steak knife set when I found this sharpener. My 47 year old steak knives are sharper than ever -I don't need new ones. Best part is the effort is minimal !! My carving knives are sharper than when I used to take them to a knife sharpener Amazing Product !!