Avoid OK Knives
It was so tempting to buy a cheap spyderco knockoff that I bought 3 of them. I knew the risks but I didn't know the knives would be this bad. There is signifiant play in the locking mechanism of each knife (manix, pm2, endura 4) and the steel is soft and cheap and won't hold an edge. In addition, they wouldn't respond to any of my emails requesting a return.
Guys, save your money and buy the real deal, these things are as cheap as they come. (I recognize others may have a better experience - I wish I was one of them)