Well, as they say. "You get what you pay for". They were very cheap compared to the American versions and it shows. The very first use I had with one, it first dropped the tip onto the concrete floor from a very short distance, about 3 feet, blunting the tip significantly. They are not very hardened and dull much faster than, for example, the more expensive American version. However, they cost about 1/5 the price, so like I said, before you pay less, you get less. As long as you don't drop them