COMPACT & LIGHTWEIGHT: The "Small D" (Sm'D) design offers the functionality of a D-shape carabiner in a significantly lighter and more compact package (41-55g). TIBLOC KEEPER HOLE: Features a small, dedicated hole in the spine that allows you to tether a TIBLOC or MICRO TRAXION to the carabiner with a cord, making the system loss-proof. D-SHAPE EFFICIENCY: The asymmetrical D-shape guides the load to the major axis (23 kN), making it perfect for belay devices, pulleys, and lanyard ends. NON-LOCKING OPTION: The "WALL" version (M39A S/SN) features a non-locking straight gate, specifically designed for aid climbing and easy clipping during progression. SNAG-FREE KEYLOCK: All versions feature a Keylock nose (no hook) and a fluid interior design to prevent snagging on webbing, ropes, or bolt hangers. The Petzl Sm'D is a compact, ultra-lightweight asymmetrical aluminum carabiner designed for workers at height and climbers looking to reduce weight to a minimum. Its D-shape is functional regardless of orientation, making it ideal for attaching devices, pulleys, or lanyards. The H-shaped cross-section ensures an optimal strength-to-weight ratio while protecting markings from abrasion. Features a specialized small hole for connecting a TIBLOC or MICRO TRAXION with a keeper cord to prevent loss. Available in Locking (Triact/Screw/Twist) and Non-Locking (Wall) versions.