The last two photos show an example of connection with cylinders. Made in USSR, You will receive what you see in the photo.For other countries please ask me. I have a lot of items from Soviet diving equipment. If you don't see what you need on my list, ask me. Check out my other items! Be sure to add me to your favorites list! If you have any further questions about this item, feel free to contact me. This item is in the category "Antiques\Maritime\Diving Helmets". The seller is "maysterua" and is located in this country: UA. This item can be shipped worldwide.