Features: Black nitride coated titanium. Cylindrical tritium lamp for double-sided green light. Description: Spyderco fans, rejoice! Your favorite knife could get a whole lot cooler with the Glow Rhino Tritium Lanyard Hole Plug! Made with a luminescent hydrogen isotope, this alternate option for a lanyard hole provides a point of light that will always glow and never run out of battery, so when it's dark, you can always find your knife in an instant. Take your knife to the next level in both style and practicality with this piece! Compatible Spyderco Models: Spyderco Military Spyderco Paramilitary 2 Spyderco Para 3 Spyderco Manix and Manix LX (NOT compatible with the Manix Lightweight) Please note: Installation of this lanyard plug takes proper tools and knife know-how. The Spyderco warranty does not cover disassembly by anyone other than Spyderco's warranty department. If you're a tinkerer, check out more of the aftermarket parts we carry!