The bucket is clear and very lightweight. The word "disposable" comes to mind. The tube is clear (slightly blue) and 60 inches long. It's maybe 3/16" diameter. The business end has one hole on the end and one hole about 1" from the end. So yes i think it is designed to be used without any kind of attachment. It comes with a blue cap over the end... The bucket is maked up to 48oz, 1/2" from the top... The flow control is just a piece of plastic with a "keyhole" in it -- slide the skinny part over the tube to cut off flow.
I haven't used it yet, and I'm really not sure why I ordered it... Thought it would be nice to have a clear one, and it was cheap.
I have a stainless one from optimalhealthnetwork.com that I'm quiet happy with -- though I still need to find a way to hang it (tilts a lot when hung by the handle on the side).