Instruction: Answer the given question by extracting information from the supporting document.

Input:
Question: How far apart are the mounting holes? Want to see if it will match the existing ones before purchase as they are through tile.
Document: The rod looks durable, but the finish chips easily off the mounting brackets. You'll need to use kid gloves mounting this thing. I would return it, but once it was up I didn't want to go through the trouble of taking it down and fixing holes in the walls. Gonna try to get some paint to patch chipped finish.
This is a high quality double curtain shower rod that looks high tech and stylish with the Clipperton satin nickel shower curtain rings. I would give it 5 stars if there was an easy way to mount it with suction cups( or non-destructive attachment) instead of having to drill holes into the shower tile or travertine for mounting screws to attach it to the wall. You have to make several measurements on the opposing walls to line up the screw holes to get the rod level to the floor.
If you want to augment your elbow space in the shower, this is a nicely finished and sturdy rod. happy purchase.
Love the way it makes my shower feel larger! So glad I purchased this item....I needed some help installing it since we had to drill holes in the tile to mount the brackets.
Looks great unless you look closely and see the plastic joint where the bar is adjustable. I like it, was affordable and fairly easy to install. Would buy again but ideally want one that is ALL metal.
Nice curved rod. The instructions should be taken with a grain of salt because when I measured due to the size of my tub, the rod was out way too far. I ended up putting it basically where the existing rod was and am happy with the dimensions. I would buy again.
If you have shower curtains get this!!! I have purchased 4 at this point and will purchase more for my rental property. Regular shower curtains with those spring loaded insides always seem to move especially since most have those rubber tips that slide. I used my existing shower curtains and kept the hooks and rings I already had.
This really opens up my shower. I have so much room now. It was not hard to put up between my husband and I. It was less expensive than the ones I've seen in stores and I even shopped around online before I bought this one. This is the best. It is of good quality metal and looks very nice up. I want to buy another one.
I love the look and it definitely adds  more space to a tight shower and makes it look more luxurious. Only problem was installation was difficult due to the hardware it came with. If you cannot find studs to attach the rod you will need better anchors. The ones that came with the rod were plastic and broke instantly. We had to go to a hardware store and purchase metal anchors and that did the trick. Other than that I love my shower rod :)
This was a perfect shower rod for the guest bath in our new house. The bronze color matches the plumbing fixtures. Beware, however, that installing it in tile can be tough. The tile around this tub went way up the sides so we had to drill some holes in the tile to screw the rod into. It's well made and will last a long time, and the curve makes it comfortable to take a shower in the tub.
Answer: The mounting holes are around 7cm apart. I'd recommend not using the screws that come with the set as they are poor quality and strip even with screwing into drywall.