It's Up to a Vote
Being accepted into the club is a rigorous process involving several rounds of membership. Some people wait in line for several years before they get admitted to the club, this is due to a collective unanimous vote that is required to let any new members in.
Angels Only
Once you become a Hells Angel, you can never join another motorcycle club again. "Never combine your support to Hells Angels with other clubs, street gangs, or others if you are unaware of the relationship between those others and the Hells Angels Motorcycle Club," the website reads.