The most effective dagger blade shape has a slight wedge shape. It provides us with several advantages that the parallel dagger shape, common in mass production, does not. Parallel edges became the standard because knife makers and factories use flat bar stock which comes the width of the blade. Making it cheaper and easier for the maker. But the actual use of the blade should dictate the design, not ease of production. The Blade Nonparallel edges or a wedge shaped dagger creates a increasingly wider wound channel, increasing the users capability of hitting the vital target aimed at. It also becomes free from the friction of the wound channel much quicker, allowing the user to hit multiple targets more quickly. Perhaps the greatest benefit in the wedge shaped dagger is the amazingly effective point configuration. With the parallel dagger you end up with a rounded point design. As opposed to the Kryptos design, which gives us a truly remarkable design for thrusting through even the most resistant surfaces. (multiple folds of clothing, Kevlar, webbing types of vests, etc.) The Handle When it comes to blade handles there are a few considerations. Draw, Use, Durability and Comfort. The Kryptos has all four. In particular is it's draw. When it comes time, you want a 100% positive draw. No fumbling trying to find it or gain purchase of your master grip for the draw stroke. If you have gloves on that becomes even harder. To dramatically increase the positive draw stroke we created a four point friction area on the pommel, allowing the hand to catch the blade handle in any or all four sides. This unique design dramatically increases the user's grip and insures a positive master grip upon completion. The Trainer is an exact replica of the live blade but with a couple of small but important changes. The tip of the Kryptos Trainer is 0.5 inches shorter than the real blade. When you practice with a trainer, you touch your target with the tip but cannot enter the target. This shorter design builds an automatic half inch penetration into your targeting and negates the training scar created by using trainers. The anodized blue color is a safety standard in Military training. All inert training devices are blue. (blue guns, blue Claymores, etc.) **Due to the nature of the live blade and trainer feeling exactly the same: PRIOR TO TRAINING, ALWAYS VISUALLY ENSURE YOU HAVE THE TRAINER IN YOUR SHEATH AND YOUR LIVE WEAPON SAFELY SECURED. Kryptos Specs OAL - 9 3/4 inches Blade Width 1 1/2 inches Blade length 5 1/4 inches Blade thickness 5/32 of an inch Handle length 4 1/2 inches Handle Thickness 3/4 inch tapering to 1/4 inch AUS 8 Steel Blade coating - Titanium Nitride G 10 Handle Custom Kydex sheath. Excellent condition.