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Jack Wolf Big Bro Jack
The Jack Wolf Big Bro Jack is the grown up sibling in the family, a full sized sleeveboard slipjoint that scales the boy's knife pattern behind the Little Bro Jack into a proper working folder. Jack Wolf Knives builds it the traditional way, single stainless backspring, nail nick pull, firm eight out of ten action with a crisp half stop, then finishes it to the premium standard that made the brand's name, with integral 6AL/4V titanium bolsters and liners machined as one piece.
Hollow Ground S90V Clip Point Blade
The 2.98 inch clip point runs Crucible CPM S90V around 61 HRC with a hollow grind and 2.63 inches of cutting edge, sized for real pocket work without crossing into hard use territory. Blade finishes rotate by release from satin to blasted and tumbled, and S90V's wear resistance keeps the edge working long after lesser steels quit. See how it compares in our guide to every major knife steel compared.
Premium and Steel Series Slipjoint Builds
The premium Big Bro Jack pairs its titanium construction with rotating scale materials from Kirinite and Fat Carbon to CamoCarbon and micarta, while the Steel Series trim brings the same pattern down in price with 14C28N steel, polished bolsters, and workhorse scales like burlap micarta. For help choosing between those handle materials, our guide to knife handle materials breaks down how each carries and wears.
A Full Size Traditional Slipjoint for Everyday Carry
At 3.9 inches closed and 2.6 ounces, the Big Bro Jack hits the sweet spot between a gentleman's folder and a using knife, firm in the hand and forgettable in the pocket. Like every Jack Wolf release, variants are limited runs that sell through and stay gone. Browse the rest of the lineup in our Jack Wolf Knives collection.