Ever hammer on your untralight nut tool? The force is dampened by the webbed design. Less driving force=more pounding. I have noticed a significant difference between my Black Diamond (webbed) not tool and my Ushba (solid) titanium nut tool when it comes to busting loose nuts jammed into cracks. Why BD changed the desisn? Less weight and less material. Cheaper to make and the lighter weight is a marketing ploy.