It was 1915 when Heinrich Boker & Co. Solingen received the government order to develop a compact fighting knife that would be especially useful for trench warfare. After 90 years, we are reproducing the original knife blade out of high carbon steel with 0.75% carbon. The pronounced steel crossguard, the wood forearm handle, (designed for a firm and safe grip), and the official tang stamp are identical to the original trench knife - as is the cowhide leather sheath. On the back of the blade, each knife shows its serial number. Blade length: 5 5/8". Overall length: 10". Weight: 5.9 oz.