Emma's History Hole: All About Valves
b"We bring to you yet another wonderful history hole, this time about a part of the bike that many fear. That's right, it's valves. What does a valve do? How and why do you adjust them? Can you do it yourself? These questions and more will be answered. And as always, thank you to our Patreon supporters. We couldn't do it without you.\\nWith Emma and Liza"