Med-Pak's Evidence Collection and Storage Containers were developed for the proper collection and storage of evidence recovered in the field. Their sturdy fiberboard and tinplate construction provides protection for the collector during an investigation. The inside diameter is 1 3/4" with a sturdy 1/8" wall. they are offered in two lengths - 7" and 13" long for longer edged weapons. They come packed in cases of 72. One case minimum, in stock and ready to ship.