Quella 700C Red Single Speed 40mm Deep-V Fixie Flip-Flop hub Wheels : Amazon.co.uk: Automotive
Single Speed Wheelsets and Hubs | Ride More Bikes
I want to swap my bike from fixed-gear to single-speed, but I don't think my rear wheel has a flip-flop hub. What do I need to buy to achieve this? : r/bikewrench
Free to Fixed: What is a Flip-Flop Hub and Why do you want one? - YouTube