Instruction: Evaluate the answerability of a question by analyzing the related document, outputting yes if the document contains information addressing the question, and no otherwise.

Input:
Question: is this knife a lock blade
Document: It's a good knife but the blade doesn't lock open unless you flip it out. Other than that it's pretty gr9!
This knife works like a charm. It opens and closes easily. The blade folding lock mechanism is an added measure that ensures complete safety. Since this knife is so cheap, I don't care about subjecting it to heavy use. I was very happy with this purchase.
Out of all the pocket knives I have, this one has the best feel to it when it is in my hand. I really like the rough grip on it better than the g10 grip on my Cold Steel Recon 1. There is no play to the blade which is nice because the whole knife feels very sturdy. I wish the liner lock would be a little more exposed to make it easier to close.
Is the blade made out of the best steel? No. Will it dull? Yes. Learn how to sharpen a knife people! This is absolutely the best knife I've ever purchased for its price hands down (I own about twenty). Construction is great (all metal except the rubber purchase plate on the non-clip side). Action is very good for this price point and the liner lock is simple yet safe.
I bought this knife to use at work, where I mainly use it for cutting open boxes and plastic bags, and occasionally scraping and prying. the lock is solid, there's no wiggle in the blade. the handles are plastic on the outside with a rubberized texture area in the middle over a metal frame. came sharp enough out of the box. the clip has good tension and goes on and off my pocket easily.
The weight of this knife feels very good in my hand. The blade length and overall length are (for me) just right. I found the description in Amazon for this knife to be very accurate except for one segment:&#8220;Liner lock Dual thumb studs for easy opening Carry System&#8221;I have no way of knowing if only the one I received is not easy opening. Left or right opening makes no difference.
I only gave this one star because I could not give it &#34;0&#34; stars. When the knife is flipped open it gets stuck in the locked position; the only way to close the knife is to pry the lock back into the unlocked position with another knife. The locking mechanism overextends making it impossible to unlock with your finger. Also, after minimal use one of the small screws holding the pocket clip in place fell out rendering the pocket clip useless.
I guess that if you want to choose quality go for other brands like Kershaw or Gerber.UPDATE: One of the blades' lock got stuck by just wrist opening. Not very good quality besides the fact they are heavy and bulky.
Very sturdy knife with a decent blade. Fits comfortably in the pocket. Opening is a bit stuff but I believe over time that will resolve its self.
It came sharp and did not dull. Sadly, it is a shelf sitter because the blade(3.1 in) exceeds my state limit, It is otherwise a good solid knife.
Answer: yes