Piranha Excalibur OTF Automatic Knife is a double action automatic knife that is an overall open length 7.9 inch out the front automatic double action knife with a 3.2 inch blade that is .125 inches thick. Closed this 6061-T6 Aluminum handled knife is 4.75 inches with a thickness of .52 inches. These knives weigh in at approximately 4.4 ounces depending on the style. Each knife comes with a tip down carry pocket clip on the back and a sliding firing button on the front. Made in the USA.