Easy. If you use shimano pedals, get shimano cleats. If you use CB pedals, get CB cleats. If you use time pedals, get time cleats. ...
If you get brand new pedals, they come with cleats, so you don't have to worry about it.
@Dr.E started
London Fixed Gear and Single-Speed is a community of predominantly fixed gear and single-speed cyclists in and around London, UK.
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Easy.
If you use shimano pedals, get shimano cleats.
If you use CB pedals, get CB cleats.
If you use time pedals, get time cleats.
...
If you get brand new pedals, they come with cleats, so you don't have to worry about it.