BlackHawk Single Mag Cases Double Stack 9mm/.40 Cal Matte Black. The belt clip and rotating molded platform ensure easy quick access. Flexible construction allows the magazine case to be used with or without a holster. Constructed with an ambidextrous double-sided carbon fiber backing the magazine case offers ultra-quick release while maintaining solid reliable retention. And its slim profile allows you to easily conceal it in a pocket trouser waistband or a jacket. Specifications for BlackHawk Single Mag Cases Double Stack: Manufacturer: BlackHawk Fabric/Material: Carbon Fiber Magazine Type: Double Stack # of Mag Pouch Compartments: 1 # of Mags Held in Each Compartment: 1 Hand: Ambidextrous Attachment Type: Belt Clip/Hook Holster Type: Belt Holster Features of BlackHawk Single Mag Cases Double Stack Curved to waistline for slimmer profile Built-in tension spring securely holds magazines of various sizes Fits 9mm/.40 cal/.45 cal/10 mm/.357 Sig Package Contents: BlackHawk Single Mag Cases Double Stack Belt loops and belt clip BlackHawk 410600PBK: Single Mag Cases Double Stack 9mm/.40 Cal Matte Black