Crew can quickly fasten these opening blocks wherever needed. ULC bearing technology ensures sheaves turn smoothly and maintain efficiency at high loads. Snap-fit Torlon® ball bearings handle thrust loads, and the integral head-spacer prevents the Hardkote-anodized sideplates from binding the sheave. The articulating Loop carries the block’s primary load. Strong, lightweight Velcro® strap holds block closed when sideplates are aligned.
