1065 Carbon steel satin finished blades Bone handles in Coffee Brown Nickel silver bolsters Closed: 4.20" Blade: 3.25" The Double Action Lockback Trapper - Brown Bone Knife has classic trapper features with a back lock mechanism. Not just used for cutting, but leaving a mark. With Carbon Steel blades and a Coffee Brown Bone handle, this knife will get the job done and much more.