Military Fuse can. Originally held the sub assembly for an MK-72 proximity fuze. All steel with gasket screw-on lid, makes this handy container sturdy and waterproof. 3″ diameter x 9″ long. Great for storing a variety of essentials. Also makes a great noise maker. Just drop in a couple of steel ball bearings and shake up a storm at the next sporting event. Used-good condition.