The Eagle Heavy Duty model is based off the Eagle Ultralight design, but features a stronger, tougher build that makes it even more field ready. This Eagle HD features skeletonized heat treated 400 series stainless steel liners and earth brown G-10 scales. The spear point style blade is a premium ZDP-189 laminate for exceptional cutting and toughness. The Heavy Duty model has dual thumb studs, like the Eagle Ultralight, and a reversible/removable pocket clip.