Designed for the easy transportation and storage of the hundreds of millions of US Metal Military 30 Caliber ammo cans out there. Excellent for organizing ammo tactical gear tools survival gear and easy to secure with Four tie down spots for ATV attachment. Trays are stackable and nest on to the top of each ammo can giving you the ability to stack them tall. Metal ammo cans have a tendency to rust when stored on certain floor types the tray holds them 3/8 off the floor. Ammo cans sold separately. MAC30 hold 4 30 Cal. Metal ammo cans securely in their slots and each tray will hold up to 100 lbs. Strong large handles carry the load easily and the tray are made of rugged polypropylene to last. Both sizes of the Metal Ammo Can Trays stack on top of each other. Made in the USA - Tray Outside Dimensions: 19.5