So, if you want to order a new one, get the caliper out and measure it very carefully
This was no problem for me, because I had the wrench, but it is something to consider when ordering
I replace my daughter's seat post with this one, and it fits well
Perfect, solid, cheap, and does the job better than the POS that came on my single speed, keep replacing more and more pieces each week, lol
Awesome! Great seat post, note that if you're frame doesn't have a clamp you will need to purchase one separately
Either a 4mm or 5mm, I am guessing