Delta Force OTF D/A Black Button Dagger Double-Serrated Black Automatic Knife. This knife has a great feel to it. Fits in your hand perfectly. The snap on the blade when it pops out is astounding and very smooth. The drop point black serrated blade is 3.5 inches 440 stainless steel serrated. It comes with a pocket clip, glass breaker and belt sheath. Overall length of the out the front automatic knife is 9 inches. The handle is all metal with the button on the spine of the knife. This automatic is double action meaning when you push the button forward and backward the blade pops in and out.