The CQC-4KXL offers a larger blade of just under 4 inches, with a G-10 front scale and steel back. A sturdy frame lock secures the blade open during use and releases easily to close. Of course the CQC-4KXL features the patented Emerson wave shaped feature. A small wave-shaped tab on the top of the blade is built to catch on the pocket seam, opening the knife as it comes out of the pocket. This instant-open feature is a favorite among military, rescue, and law enforcement knife users. Alternatively, you could just use the built-in thumb disk to open the CQC-4KXL manually. Includes a reversible pocketclip for left- or right-handed carry.