UST - Ultimate Survival Technologies Para Knife FS, 4" Fixed Blade Knife, Paracord Handle, Orange. A durable 4 inch (101mm) long, 4mm thick stainless steel blade is a handy knife to have on the trail. The saw tooth blade adds maximum cutting functionality and the black-oxide finish reduces rust and protects the blade. Protective sheath for safe storage included. 20-02232-08