The Petzl RollClip A Non Locking Aluminum Pulley Carabiner has a gate opening on the pulley side that facilitates installation of a rope when the pulley is fixed to the anchor. Designed for easier handling, it is sheave-mounted on sealed ball bearings for excellent efficiency. The H cross section of the carabiner ensures an improved strength-to-weight ratio and protects markings from abrasion. It may be used with a CAPTIV positioning bar to favor loading of the carabiner along the major axis and to limit the risk of it flipping.