I've got more of these than what I can use so I figured I'd offer some for sale. These are for the AN/SSQ-41 sonobuoys. The internal opening diameter is right at 5 inches and the overall internal length is 36 inches. These are not cheap to ship, but I'm able to if you want to pay shipping. I'm in the mid-valley but I'm in Eugene to Portland fairly often. These are super heavy duty and great for a gear cache. I am asking $30 each, but I'm also up for trades, so let me know what you've got.