The Sterling HollowBlock2 is one of the most trusted friction hitch cords used by climbers, guides, and rescue professionals. Redesigned with 100% Technora® aramid fiber, the 6.8 mm HollowBlock2 delivers exceptional heat resistance, abrasion resistance, and long-term durability.

Its unique hollow-braid construction provides superior grip on the rope, making it ideal for use as a prusik, autoblock, or Klemheist friction hitch. This lightweight yet extremely durable cord is commonly used for rappelling backup systems, self-rescue setups, and ascending techniques.

Designed for reliability in demanding environments, the HollowBlock2 performs best on climbing ropes 7 mm and larger.