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
FIXIE Bike Wheels 27 x 1 Flip Flop Hub - How To Install Freewheel Cog - YouTube
700c Fixie Fixed Single Speed Bike Wheel Set Flip Flop 16T Freewheel Green Tyre – Fixed Gear Frenzy
What is a flipflop hub? fixed or freewheel – Unknown Bikes Europe