MTM's P-50 series features a flip-top lid and is molded to hold 50 rounds of ammo in a neat 5x10 grid. These ammo boxes have a textured surface for gripping and a grooved lid designed to for easy stacking. Choose from five sizes in multiple colors. Each box is supplied with a load label for at-a-glance organization. Made in the USA. Calibers- OAL 1.86" 44 Rem. Mag., 25-20 Win, 256 Win. Mag, 310 Cadet, 35 Win. S. L., 357/44 B&D TC, 38-40 Win, 41 Rem. Mag., 41 Long Colt, 44 Spec., 44 Russian, 44-40 Win., 45 S&W Schofield, 45 Long Colt, 45 Win. Mag TC., 460 Rowland.