Boker - Optima Series Lockblade -- Here's one knife that's right for all of your cutting jobs. Optima gives you the flexibility you need: a choice of fine handles, plus interchangeable locking stainless steel blades that switch out in seconds, then lock securely in place. This model features stag horn handles, framed by distinctive nickel silver bolsters. Includes 440C stainless steel blade. Closed length: 4 3/4". Blade length: 3 3/8".