What pitch are S3 belts

I have a credit at Amazon that I have to use or lose soon. I thought it might be a good idea to get a roll of belt material. I know the S3 uses 9mm, but there are several different pitch/bore listings. I see a pitch of 2 and 5. I’m assuming it’s 2, but I just spent three days troubleshooting a problem at work only to find out it was because I didn’t include a period at the end of an ip network range. So I’m tired of paying for my mistakes this week.

The community tries to list sources for parts and additional information on them:

GT2 belting — see Belt Lengths on the Scaling Up page for estimates on lengths needed for various machine sizes
2mm pitch
… SO3, and all XL and XXL units use 9mm wide belts.

More details at: Shapeoko CNC Router, Rigid, Accurate, Reliable, and Affordable

Interestingly, every other time I went to that page that information wasn’t there. This time, sure enough, it was right there. Must be part of the new html5 coding <show_data=only_after_user_asked_question_in_forum>data…</show_data>