I bought this sharpener for obvious reasons, about the only tool out there that should sharpen my punches for leather work. I am not an expert on how this tool was made, but this appears to have diamonds infused into the sharpener. This is a great feature as it will do just that, sharpen the tool, and thus far it has done so. For the smaller tipped punches I am only using the end and my only concern about this tool, this is where the majority of my sharpening will be happening and wonder if it will stand up the use. I found the price a bit high and but do have concerns on how long that end tip will last. I gave it a 4 based on that unknown question and price is high for what I am getting. Time will tell the true story if this is worth the money or if it is a bust. After a few uses it is showing some signs of wear. Overall, I am happy with the purchase and it does do a good job.

Great sharpeners. Just what i needed.

Nice construction. Works great.

Nice product.

Deceptively simple. Works beautifully. *****!