Using Direct Axle Technology, Metolius removed every unneeded scrap of material from the Ultralight TCU to make it as lightweight as possible while still maintaining the ultra-strong construction that Metolius is known for. The TCU's narrow head profile combined with the three-cam arrangement allows these cams to fit into very small pockets. Once they're in, the range finder tells you if your placement is good?or not so good. Spectra slings lighten these cams even further. After all, your gear is suppose to help you go up, not hold you down.