I purchased this knife from an authorized ZT dealer. I had high expectations for the knife based on reviews I have read. The knife out of the package is a good looking knife. I had the knife for about 10 min. Learning how to open the knife quickly, I attempted to open the knife when the front screw holding the knife halves together went flying across the room. I contacted ZT customer service. The customer service response was to just apply loc-tite. I thought of what they wrote to me as I looked at the knife handle, blade screws, and two shims spread out in front of me. I think the easiest thing to do would be to just purchase from another manufacturer. The next $280 from me will go into someone elses pockets. You need to make up your own minds. I have already made up mine.