Shrade Automatic Knives Extreme Survival Black Plain. The Shrade Automatic Knives Extreme Survival Black Plain is Schrade's new series of automatic knives, The Extreme Survival Series, all feature a T6 aluminum handle with a special inlay for superior grip. The blades come in black coated 440 stainless steel with a plain blade. On the end of the handle is a glass breaker, and on the back of the handle is an aluminum pocket clip. It has a 2.75" blade, closed is 4.25" and is overall open 7.125". It weighs 3.25 ounces.