The Montana Sling Cartridge Belt Holds 5 cartridges. Constructed of black full grain bridle leather. Will work on belts up to 1 1/2" wide. Available for the following cartridges: Standard Long: 30/06, .270, .280, family. Belted magnums, from .300 win mag and shorter including .257, .270, 7MM Weatherby. NOTE: This product is designed for the hunter to quickly remove the cartidge from the loops after the flap is opened. The lower flap remains in an upright position to keep the cartridges from falling through. They are "wet formed" to insure a rigid lower flap.