Ultralight TCUs are the lightest cams in the world! Direct Axle Technology allows for more placement options in shallow, narrow, or bottoming placements, and makes tricky placements easier due to better cam lobe visibility. Ultralight TCUs feature a narrow head for an amazing array of placements. The U-shaped body has enough stiffness to align the cams correctly in a vertical crack and enough flexibility to allow for horizontal crack placements. Range Finder tells you at a glance if you&';ve chosen the right size cam for the placement. Ultralight TCUs have an optimized cam angle for greater holding power and wider cam faces for more grip. CNC machined for much greater precision than stamped or extruded cams. Sold individually or as sets (#1 - 4 Free Set) or (#00 - 4)