The ornamental design for a carabiner, as shown and described.
FIG. 1 is a left perspective view of a carabiner showing our new design;
FIG. 2 is a front view of the carabiner shown in FIG. 1;
FIG. 3 is a back view of the carabiner shown in FIG. 1;
FIG. 4 is a right view of the carabiner shown in FIG. 1;
FIG. 5 is a left view of the carabiner shown in FIG. 1; and,
FIG. 6 is a top view of the carabiner shown in FIG. 1, the bottom view being a mirror image thereof.
The ornamental design claimed is shown in solid lines in the drawings. The broken line illustrations in the drawing figures of the pin and holes are for illustrative purposes only and form no part of the claimed design.