It's worth the money and more. Includes a guide for the correct angle of the blade. When sharpening with the coarse side (600), it requires moderate/good pressure of the blade on the stone. When sharpening with the fine side (3000), it requires almost no pressure at all. This way the knife sharpens perfectly and cuts like a razor. I highly recommend it.

Finally, I have knives that cut in the kitchen again! It does the job very well for which it is intended. It requires some familiarity, of course, so that the result is correct. There are several videos on the internet for this reason. Initially, I soaked the stone in water for many hours (it was bubbling), I sharpened all the knives I wanted (10-12) and in an hour and something I was done. It requires attention so as not to damage it unilaterally. In the package, there is a small stone for restoring the flat surface of the stone.

I sharpened a chef's knife and three regular kitchen knives, after watching the related videos... indeed, they became sharp, not as much as it shows on YouTube, though, with the test on a sheet of paper... I definitely need to get more familiar with it... be careful, the blue side fades and stains quite a bit, if you have placed a towel underneath, as the non-slip bottom does not fit well on all surfaces. I will try it on a chisel and will update.

Very good sharpening stone for its price. If you spend a little time, you can turn a simple knife into a razor!

Excellent choice, you sharpen the knives first on one side with the coarse grain and then you give them a breath of air on the other side. Use only with water, the base is non-slip, but it needs a towel underneath for the water. I sharpened 10 knives relatively easily in about an hour with excellent results, they cut through the air. I highly recommend it.