From the latest run at Curtiss knives ! , This Medium F3 features a dual finish Carpenter XHP Stainless Sreel blade with IKBS bearings , the scales are stone washed titanium sporting the milled (FF) pattern. The pivot and deep slotted back spacer are titanium , clipped for tip up carry and weighs in at 5.9 OZ. (Comes with special pivot Wrench)