Cold Steel TiLite. The four inch version is a legal five inches in Texas when the full blade is measured behind the hinge. Opening spur works well for right handers when pulling from pants pocket. Very high quality steel. See a similar knife in action on the Discovery Channel in the battle between the Al Capone and Jesse James gangs. A very informative show that was aired Tuesday night. If they show it again, it's worth watching. Old School James held it's own.