This does not have a replication of a 20 lb propane tank fitting. It has replications of three 1 lb propane canister fittings and attaches to a 20 lb propane tank. The pipes appear sturdy and a bag to hold them in is included.
I rated this poorly due to the assistance given to me by an online representative. Suffice it to say, I now have to pay an additional $27 to get an adapter to do what I was told I could do. The "chat" (with my annotations) follows:
4/15/09 (Around 11:00am EDT)
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Thanks for contacting us. My name is Zach Z., how can I help you?
Ken: Hi. Do you know what fittings are on the Brunton Propane Post (http://www.backcountry.com/store/BRU0116/Brunton-Propane-Post.html)?
Zach Z.: Hi Ken
Zach Z.: What fittings are you referring too?
Zach Z.: The fittings for the other appliances?
Ken: Yes. For example, is there a replication of the fitting on a 20 lb propane tank in addition to two fittings that are the same as those on a Coleman propane tank.
Zach Z.: Yes that is correct... it has the main fitting for the 20lb propane tank
Zach Z.: then it also has 2 smaller fittings to accommodate small stoves and other appliances
Ken: How does one regulate gas flow on all three fittings?
Ken: Are they independently regulated? Or does one just turn the tank on/off?
Zach Z.: Well the main regulator will be on the main large propane tank
Zach Z.: Then there will also be smaller regulator for each extension
Ken: I can't see that from the photo. Are you looking at a manual?
Zach Z.: I'm looking at the photo
Ken: So, the knobs are not to lock the three pieces together?
Zach Z.: Yes that is correct... there are 3 knobs that connect the post... but i can also see a couple regulators that would control gas flow
Ken: Finally, does the Coleman Northstar Propane Lantern work with it on top or will I need to purchase a Brunton Propane Lantern?
Zach Z.: You can cut off gas flow to the extra appliances and still have the light going
Zach Z.: The fittings are universal
Zach Z.: the coleman lantern should work just fine
Ken: Thanks! Bye.