Watch these two tops spin for over 17 minutes

I think I saw this on reddit last week but in the mess of putting together this new site, I totally forgot to post about it (but I did send this video to my siblings). It's a English-dubbed Japanese TV show that shows two teams of expert craftsman making highly engineered tops. Not toys, mind you. These are precision machines -- tops that can spin for record-long times. In this case, over 17 minutes each!

I SAID 17 MINUTES. HAVE YOU EVER SPUN A TOP FOR THAT LONG?!