Petzl Attache Screw-Lock Carabiner Yellow. It has an H-frame to keep the weight low and the round-stock basket creates a smooth surface for the rope to run over for easier belaying with the VERSO REVERSO or a Munter hitch. The Keylock system helps prevent the carabiner from snagging during use. Specifications for Petzl Attache Screw-Lock Carabiner: Manufacturer: Petzl Type: Screw Lock Fabric/Material: Aluminum Weight: 58 g Carabiner Type: Keylock Carabiner Features of Petzl Attache Screw-Lock Carabiner Pear-shaped carabiner with round-stock basket for smooth belaying:- Round-stock basket provides a smooth surface for the rope to run over when belaying with a Munter hitch VERSO or REVERSO- Partial H-frame optimizes the strength-to-weight ratio- Pear-shape design is versatile for climbing and mountaineering Easy to use:- SCREW-LOCK locking system provides good handling and effective locking- Visual indicator makes it easy to check that the carabiner is locked- Keylock system and smooth nose help prevent the carabiner from snagging during use- Compatible with the BAR accessory to prevent the carabiner from cross-loading Package Contents: Petzl Attache Screw-Lock Carabiner Petzl M038AA00: Attache Screw-Lock Carabiner Yellow