Ammo Box Features All Berry s Ammo Boxes are made from high impact polypropylene for increased strength against cracking chipping warping expansion or contraction. These Model #150 10 round slip-top boxes include side grooves that grab the top securely and allows you to adjust the lid to the desired length. They are translucent and stackable they carry a lifetime warranty and they are made in the USA. Ammo Box Specifications Available in Smoke and Clear colors Length adjustment: 4-5/8 to 6-5/8 long #150 Ammo Box Dimensions: 6.72 oal x .82