This double leather holster belt is designed for classic single-action revolvers such as the Colt SAA (Peacemaker), Ruger Vaquero, Uberti Cattleman, Pietta 1873, and Heritage Rough Rider. The holsters accommodate models with barrel lengths from 4 to 6.5 inches in common calibers such as .22, .357, .44, and .45. It is expressly not suitable for modern double-action revolvers, pistols, or firearms with significantly different frame shapes or extreme barrel lengths.