What Our Gearhead(R) Experts Are Saying:"This AutoBlock is a must-have for long rappels. It's easy to use with a prusik or Klemheist knot and gives me extra peace of mind when descending. The durable cord holds up well to repeated use and tough conditions."When descending towering cliffs or steep canyon walls, we count on the Sterling AutoBlock Loop to provide dependable backup. Designed from robust 6mm cord, this essential tool offers a secure connection between the harness and the rappel rope, giving us added confidence on long or technical descents. The 13. 5-inch loop works seamlessly with prusik and Klemheist knots, allowing smooth functionality as a friction hitch. Durable and lightweight, the AutoBlock is an easy addition to our kit, ensuring safety and control without weighing us down. Whether tackling multi-pitch climbs or navigating big walls, it's an indispensable partner for every rappel.