The first fixed blade in the successful RBB series. A highly innovative concept without any compromise. The 440C stainless steel blades has an overwhemling strength of 6 mm, in the typical RBB tanto style. The Boker Plus RBB Fixed Blade by Jim Wagner is the first fixed blade knife with an interchangeable glass breaker! The guard at the end of the handle offers protection in any cutting task and also can be used as a lever. This is a heavy duty knife, weighing in at 11 ounces! Includes sturdy Kydex sheath for convenient carry.