Instruction: Generate an answer to the question by utilizing the information contained in the document.

Input:
Question: Can the paper towel roll fit over the end of the bar or does the end piece have to be unscrewed?
Document: It's a paper towel holder. Not much can be said about a metal bar that holds a roll of paper towels. A medium dark bronze color that is very nice. Was easy to stall. The roll stays on the bar with the help of the knob at the end. Low profile which is unobtrusive. Very sturdy!
I mounted this paper towel holder in an vertical position. I find this most convenient because the roll never slips off the end and there is no need to unscrew a cap to replace the roll is the case with so many other holders.
Put some thought into which direction to mount it. The small end cap on the open end doesn't do much to hold the roll on, so if you try to tear the paper towel in the wrong direction, the roll will go flying. Thankfully I anticipated that and positioned accordingly, so it rarely is a problem. Still, it would be nicer if the end cap was considerably larger to keep that problem from happening. **UPDATEUnfortunately, downgrading to 3 stars instead of 4.
I have a small kitchen, so I actually attached this to the underside of my cabinet. It hangs well and feels as if it will be stable and steady for a long time. It also (so far) doesn't seem to have an issue holding the paper towel roll in place. My only critique is the holder comes with huge screws. They fit it, sure, but they are WAY longer than what is needed. Find yourself some shorter screws, and you'll be set.
High quality product in oil-rubbed bronze. Exactly what I was looking for, the roll doesn't slide off the end when using it, and it was priced lower than other towel holders of lesser quality. I would buy from this vendor again.
my problem with this bar is that it will not fit in the location I wanted to use it (too close to my undercabinet lights). It is very nice quality  besides that, so I will probably use it in my workshop. Classy! !
Product looks good but is very poorly made. Towel bar fell out of wall bracket in first week of use. Also will only accept small paper towel rolls.
I bought this specifically because I read a few reviews that said it would fit large or larger paper towel rolls.
I had a hard time finding a nice looking wall-mounted paper towel holder for my bronze fixture kitchen. The color of this bar is very nice, and it looks good mounted on the wall (make SURE you use the drywall anchors or it will be wobbly, I had to re-do it).
It only fits very small rolls of paper towel which are difficult to find. The bar the towels sit on is not thick enough so when you pull a paper towel off, it keeps rolling and four more paper towels come with the one you wanted! They certainly did not think this one through before they came up with this poor design.
Answer: it does not unscrew, jsut fits over the end of the rod. Karen