Product Description The Mantis Pen is a refined Grade 5 titanium 4-in-1 multi-tool that merges precision writing with everyday utility. It features a bolt-action mechanism, and cleverly integrates four functional elements in one sleek tube: an “eternal pen” tip capable of writing on virtually any surface (even underwater), a micro-knife with replaceable blade, a tungsten-steel tip for glass-breaking or striking, and a waterproof capsule for storing small essentials. Measuring approximately 94 mm in length (closed) and weighing just ~18 g, it slips into your carry effortlessly while showcasing premium craftsmanship and material quality. Whether you’re jotting notes, making small fixes, or simply appreciating the refined feel of titanium in your hand, the Mantis Pen is designed for the EDC enthusiast who wants elegance and functionality together. Specifications: Material: Grade 5 titanium body — lightweight, durable and corrosion-resistant. Functions: 4-in-1 tool including pen, micro-knife (replaceable blade), tungsten-steel tip, waterproof capsule. Size & Weight: Around 94 mm length (closed), 18 g weight. Finish: Sand-blasted titanium finish. Everyday carry optimized — minimal size, maximum quality.