Both the DS101 and DS103-T.Blue are Pro-Tech Oligarch variants on the Sinkevich platform with the same overall dimensions, handle thickness, and weight. The DS101 uses a Wharncliffe blade profile in stonewash CPM MagnaCut with black anodized aluminum handle and blasted hardware throughout — an all-black, low-contrast build. The DS103-T.Blue uses a sheepsfoot blade profile in DLC black CPM MagnaCut with Tiffany blue anodized aluminum handle and black hardware — a high-contrast colorway. Blade geometry is the primary functional difference: Wharncliffe on DS101, sheepsfoot on DS103.

The DS101 uses CPM MagnaCut with a stonewash finish. MagnaCut was developed by Crucible Industries to deliver M390-level edge retention and wear resistance combined with corrosion resistance that rivals steels built specifically for that purpose. The stonewash finish breaks up light reflection across the blade flat and hides the fine scratches that accumulate through pocket carry, maintaining the knife's appearance through use better than a satin or mirror finish would.

A Wharncliffe blade has a straight cutting edge running parallel to the spine, with all curvature concentrated at the tip rather than along the belly. This geometry maximizes usable cutting edge in a given blade length — every millimeter of the 3.25-inch blade is working edge, with no belly curve reducing contact. For controlled slicing tasks — food prep, material cutting, box opening, precision work — the Wharncliffe outperforms a drop point of equivalent length because the flat edge maintains full contact along the cut.

The DS101 uses a mini deep-carry clip finished in black DLC. A deep-carry clip is designed so the knife rides lower in the pocket than a standard clip — the clip attaches near the top of the handle and positions the knife body below the pocket line, with only the clip itself visible above the fabric. On a 4.879-inch closed knife weighing 5.4 oz, the deep-carry clip makes a meaningful difference in how discreetly the knife carries in a pants or jacket pocket.

The Pro-Tech Oligarch DS101 is a push-button automatic knife with a 3.25-inch blade. Automatic knife laws vary significantly by state and locality — some states permit them freely, others restrict by blade length or require permits, and some prohibit them entirely. Knifeworks recommends verifying your local and state laws before purchasing or carrying. A compliance form is required at checkout.

The Oligarch DS101 measures 7.125 inches overall when open with a 3.25-inch blade. Closed length is 4.879 inches and handle thickness is 0.5 inches. It weighs 5.4 oz. The handle-heavy balance and thick frame are deliberate design choices by Sinkevich — the Oligarch is built to feel substantial in the hand rather than lightweight and pocketable.