The Benchmade 290BK-1 Immunity manual axis with integrated safety folding knife has a CPM-M4 wharncliffe blade that is 2.49" in length. Perfect for tactical and everyday use. When blade length is restricted, necessity isnt'. Designed for ease of concealment and compact utility, the Full Immunity features a sub 2.5" CPM-M4 blade with a cobalt black cerakote finish, boasting outstanding edge retention and strength in a Wharncliffe profile tapering to an ultra-fine point. The included lanyard speeds up retrieval from the pocket for manual deployment in evolving situations. Finished with anodized aluminum handle scales, the Full Immunity is a concentrated dose of full fledged utility in a compact configuration.