TCUs are great for both alpine and free climbing where weight is a critical factor TESTIMONIAL Aid climbers also love 'em because their narrow head width allows them to fit so many placements that other cams won't, like shallow seams, pockets and pin scars. Now with the Range Finder feedback system, they are easier and safer to place than ever! The stainless steel, U shaped body offers greater durability than single stem units and unparalleled control during placement and retraction. As with all Metolius cams, the design is focused on holding power. Metolius TCUs are a must have for any climber's rack! Pre packaged set of all 6 TCUs, 00 4 10% savings compared to buying individual cams Recyclable packaging Includes free Metolius Cam Lube Includes instructions on care and maintenance of camming units. Cams are color coded by size.