Savior Equipment Double Pistol Mag Holder Black 5.8in H x 4.25in W. How do we know? We actually fitted all the pistol mags you can think of when we made it. Fits 2 standard capacity pistol magazines or two single stack pistol magazines in one slot. Hook backed panel allows for easy attachment onto a loop panel that allows for a modular set up. Specifications for Savior Equipment Double Pistol Mag Holder: Manufacturer: Savior Equipment Fabric/Material: 600D Polyester Magazine Type: Pistol # of Mag Pouch Compartments: 2 Accessory Attachment System: Hook Loop Fastener/Closure Type: Hook/Loop Fastener Condition: New Features of Savior Equipment Double Pistol Mag Holder Magazine Pouch for 2 Standard Capacity Mags Hook Backed Panel to Attach on Loop Panel Imported Package Contents: Savior Equipment Double Pistol Mag Holder Savior Equipment MP-TNS-PISX2-BK: Double Pistol Mag Holder Black 5.8in H x 4.25in