Colony wasp cassette hubthe colony wasp cassette hub features a lightweight 6061 t6 aluminum hub shell with laser etched colony logos and precision sealed bearings these are combined with a 14mm hollow chromoly center axle 38x24tpi axle bolts and a 1 pc chromoly driver with 3 sealed bearings and a 6 pawl engagement system that uses 3 teeth on each pawl for near instant power transfer features 6061t6 alloy hub shell special female axle design with 14mm axle protruding into drop outs by 3mm 1