All Berry's Ammo Boxes are made from high impact polypropylene for increased strength against cracking, chipping, warping, expansion, or contraction. Our Model #414 50 round boxes feature our new flip top design, providing a translucent look and an easy-to-open lid. They are stackable, they carry a lifetime warranty, and they are made in the USA. Clear #414 Ammo Box Cell Dimensions: 2.06" OAL x .64".