These are 28-hole, small-flange, flip-flop, sealed cartridge bearing aluminum hubs. They will work with single speed thread-on freewheels that are 13t and larger. The one side is threaded 30mm x 1 and the other side is threaded 1.37 x 24. The OLD is 100mm front and 110mm rear, and the axles are 3/8".
BMXGuru.com / C&W Cycle
702 North St.
Morenci, MI 49256
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