The Omni-Block combines a swivel and pulley into one tool, and incorporates a unique side plate that opens while the pulley is still attached to the anchor. Traditionally, a pulley is connected to a swivel by a carabiner. However, the Omni eliminates the need for the carabiner, reducing length and pieces of equipment in the rigging system. This larger version of the standard Omni-Block offers a larger sheave diameter for a better bend radius and more efficient friction. The sheave diameter is almost twice the size of the small Omni-Block at 2".