I have this survival comercial knife, industrial blade made by the brazilian TRAMONTINA industry. The model is called commander II. Very complete, has a compass in the top of the handle, a survival capsule inside, with fisshing acessories, sewing things, grappling hooks, turns into a wire cutter, bottle opener, screwdriver and a paracord. Even a stone for sharpening. No slingshot! I can't live with it!!!! Thisa knife is mine for about 13 years, helped me a lot when I used to go camping in "Paranapiacaba"(being in there is almost as complicated as spelling it....rains 300 days for year, 39 degrees in the day and degrees in the night....and YOU JUST CAN'T MAKE THE WOOD BURN!!! it's wet all the time). It's a mountain in the atlantic forest that surrounds the coast of São Paulo state. Ok......enough of geography! With my Ilizarov externa fixator pieces (surgical steel...Do I sound annoying for saying it every post?), I mannaged ti adapt a fork on it! It happens that the Ilizarov apparel is like "LEGO", but from a very great steel (it just doesn't rust, even if you keep it wet!). I used to make little robots, toy guns and home repairs from it. That's why I'm always using it for slingshots.... I think I talk to much... here it goes!