Looking for a Word template looking like spiral bound notebook

[Bravos]

I'm looking for a Word template with blank pages but looking like spiral
bound notebook.
I haven't done any serious Word formatting before so don't know if this is a
template or a watermark. I've seen it used by Adobe on some of their
documentation.
I am producing an ebook in Word which I will then convert into pdf using
Acrobat.
Would be grateful for any suggestions.

Regards