Overview & First Impressions
A kozuka was the small utility blade carried in the scabbard slot of a Japanese sword, and its purpose was mundane on purpose: open a letter, trim a cord, cut food. Big blades got the glory while the little one did the work. The QSP Dolphin QS161-C follows that tradition with a compact companion profile that handles the tasks people actually face daily, and it does so with a handle material that makes the whole idea feel luxurious rather than utilitarian.
Materials & Construction
14C28N gives the Dolphin an edge that responds to a few passes on a ceramic rod, and its corrosion resistance means a wet pocket is not a disaster. The white pearl shell handle is the talking point, layered and sealed so it resists chipping, with enough translucence that light moves under the surface. QSP knives have built a reputation on exactly this kind of material experiment at a price that stays approachable.
Design & Details
The liner lock is inset cleanly and releases without a fight, the blade runs on ceramic ball bearings, and the clip is positioned for deep carry so only the top edge shows above a pocket seam. Everything is scaled down: the flipper tab is short, the screws are small, and the blade stock is thin enough to slice rather than wedge. That thinness is the whole point of a companion blade.
Real-World Use
The Dolphin opened envelopes, cut tape, trimmed loose threads and sectioned an apple without the blade binding. In a pocket it disappeared entirely, which is the kozuka test, and the pearl shell handle survived keys in the same pocket for a month without clouding. Among folding knives built for polite settings, this one gets carried to dinners and offices where a larger folder would raise eyebrows.
Ownership Notes
Pearl shell asks for a little care, because it is a natural laminate and abrasive grit dulls the surface faster than it dulls steel. A soft cloth and no solvents is the whole maintenance routine. EdcMall lists the Dolphin alongside the larger QSP models, which makes size comparison easy if you are deciding between a companion blade and a primary one. A companion blade only earns its place when it is genuinely lighter and quicker than the main folder, and that is the test this one passes without argument. People who have carried larger EDC knives for years often end up reaching for a compact model like this far more often than they expected. Part of that is simple friction removal, since the knife that leaves no excuse not to carry anything is the knife that actually gets used every day.
Who Is This For?
Buy it if you already carry a main folder and want something lighter for formal days, or if you simply prefer small knives that cut cleanly. It suits collectors who enjoy unusual handle materials. Skip it if you need a hard-use blade, if you dislike decorative finishes, or if your hands are large enough that a compact handle becomes a two-finger grip.
Final Verdict
The Dolphin QS161-C makes the case for the companion blade better than most. Thin stock, a quick 14C28N edge, a lock that behaves, and a handle that looks like it belongs in a display case rather than a toolbox. It will not replace a working knife, but it will be the one you reach for most often.
