Actually, it's a allens key, hex key, etc. Somehow, it has been stripped and I cannot get it out. It is the bolt that holds the seat in place on my 07 CBR600RR. The battery needs to be changes, and I can't get to it because of this bolt. Any suggestions? I don't want to have to pay a dealer to do that for me, but I have no idea to get it out. Thanks in advance.