Kershaw Nerve Folding Knife. The Blitz is a slick RJ Martin Design. It features a 8Cr13MoV steel blade (serrated) with an ambidextrous thumb-stud. The machined G-10 handle has heavy jimping on the contours for a super-secure grip. Open it easily left- or right-handed with the big, ambidextrous thumbstuds. The Nerve also has a reversible pocket clip for tip-up or down carry.