Solo Scientific Solar Knife SK2S8 3 8" overall. 3 3 4" 420HC stainless drop point blade. Full tang. Aluminum handles. One side of the handle has a very shallow parabolic reflective surface that is able to focus the sun's energy to a singular point above the knife to ignite combustible materials to start a campfire. End of handle has a small round cutout which allows the user to make a precise tinder holder arm by mounting a branch or twig to hold tinder at the exact focus point.