The DOT M840 Snapmaster Cutting Die #4103 is a hand press die designed for efficient installation of DOT fasteners and Common Sense 78403 eyelets. Made from durable aluminum and steel, this portable tool features a heavy-duty toggle link mechanism, a dual bushing system, and an adjustable lower die. Its interchangeable punches and dies can be mounted in either upper or lower positions, while the cushioned operating lever provides comfortable use. Compact and lightweight at about 0.9kg (2 lbs) with dimensions of approximately 222mm high, 127mm wide, and 25mm deep, it delivers reliable performance for setting fasteners and eyelets in various fabric and outdoor applications.