24BK405 up for sale is a steel spacer sleeve covered under military NSN 5365-00-741-1433 , GM 2275698 , and Tacom 7411433 , see photos for a view of the public owned specifications related to this part , this comes in a brown heat sealed brown craft  paper wrapper with military tag on the front , we opened one to get photos of the product , see our store also for more items like this we add new items weekly to our ebay store here , thank you rwk