This does not affect your right to an exchange or refund for faulty equipment.
Petzl's Am'D carabiner is a lightweight D shaped carabiner made from aluminium. It is perfect as a general use carabiner, and for connection to descenders or positioning lanyards. The Am'D is available in Screw-Lock, Triact-Lock, and Petzl's unique Ball Lock mechanism. This is the Am'D with Screw-Lock mechanism.