The DMM 4CU's light weight is a noticeable advantage when packing in or climbing with a full rack. An average 20% weight saving means that the climber can "sew up cracks" with a much lighter rack. Another way of looking at it is that climbers can place 20% more cams, feel much more secure, & still come out even on the weight. Less weight with more protection.. . who wouldn't love that? Each cam is rated to 14 k N in the active, working position with the quick release sling doubled, & 12 k N with sling fully extended. The passive strength of the cams, resting on their stops, is 10 k N.