Soda Siphon Wanted (Working)

How funny someone is actually looking for soda bulbs. I went to $1.00 a bag charity garage sale today at a Catholic church in the very little town of Three Rivers, Texas. today and put 2 boxes in my bag with a tag on them saying they were Soda Bulbs. Qty 10, Part#143-05, Carbon Dioxide (8 g) CO2. The inside tab of the box says Made in Hungary by LISS Ltd. It was the end of the sale and there wasn't much interesting stuff left. Then I came looking on Ebay and the internet to find out what the heck these things were and found my way here. I don't know if these are empty or full. I can't image someone donating empty ones though. Anyway, I am going to list them on Ebay if you are interested. Not sure who I have to use to deliver them - U S Post Office by truck?

PS. When I looked at some Australian sites that carry these, one emphasized that the ones they sold were NOT the kind used for automotive purposes and that it was dangerous to use them, that you should only use ones regulated for consumption purposes. I have no idea what the purpose of these are.