Like every legend, this is a classic that has been recreated from BMX history and brought back to market as a simple sprocket for the bike life/old school community. Mount it on your real vintage bike or a modern big wheel, this sprocket always looks stylish and attracts attention!CNC machined 5mm thick 6061 aluminumClassic 4-spoke designEngraved Bob Haro Design logoFor Bolt Drive cranksAvailable in 39t anodized blue