The SOG Pentagon XR LTE is built for professionals. The CTS XHP blade is supremely hard and stays open with the innovative XR locking system, which can hold up to 1500 pounds before breaking. The bottom line is that this knife will never fail you. Every part of this knife has been thoughtfully designed the jimping on the handle provides extra grip where your hand connects with the scales, the liners are carbon fiber for lightweight carry, and the two types of openers make deployment a snap. The SOG Pentagon XR LTE is a knife that does not relent because neither do you.