I have been collecting HOn3 locomotives and rolling stock. To my surprise I messed up with the track gauge. I thought that HOn3, OO9, HOn30, and HOe were all the same gauge. They are unfortunately not. HOn3 is slightly bigger because it's meant to replicate a more broader gauge. I started desperately searching for HOn3 track. And finally I came across this pack of flex track. When I received this all of my HOn3 trains ran smoothly, including my accessories. This track is highly conducive, and doesn't need a super powerful transformer to power it. I highly recommend this track, and if I ever add more sections to my layout this is the track I would buy again.