With twice the capacity of the single mag case, Blackhawk's double mag case is curved to the waistline for slimmer profile, and an adjustable belt-clip hook accommodates belts of different widths. It has a built-in tension spring to securely hold magazines of various sizes. This single stack model has compartments for two single stack magazines and a matte black finish.Specifications and Features:Fits: 9mm-.45 Single Stack