Formula 14mm flipflop hub accepts English and metric threaded freewheels Anodized black hub Alex R390 Rim Wheel Size 20 Rim Alex X2000 HubBrake Compatibility Rim Brake Tire Type Clincher Cassette Body Type Threaded, StandardThreaded, Metric Rear Hub Spacing 110 mm Rear Axle Type 14mm bolt on Skewer Included NA, BoltOn Spokes 48 spokes Spoke Info 2.0 Silver ISO Diameter 406 20 BMX Valve Schrader Valve Length Schrader
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