Designed to store ammo but perfect for all your shooting, hunting or survival gear, all five crate sizes feature high-impact polypropylene construction with two extra strong handles for easy carrying. Two heavy duty latches and two padlock tabs provide security while the tongue and groove O-ring seal system provides superior water resistant dry storage. MTM Ammo Crates feature stacking ridges -- enabling you to stack them high without risk of toppling over. 4 hook points will allow you to attach rapidly to ATVs or boats.