The 6.8 mm HollowBlock2 is made of 100% Technora® fiber for increased abrasion resistance and improved durability. It's gripping ability comes from the unique hollow-braid construction, for use as a prusik or Klemheist knot on ropes 7 mm or larger.
Tri Cams have been a staple on the rack of every serious trad climber for years, and the Camp USA Dyneema Tri Cam Set makes the tried-and-true classic even better.