About this item Premium Quality: Swing Arm Spool Hard anodized for a protective finish, CNC machined from billet aluminum, very in use and not easy to fade or Function: As hex socket threaded fasteners, these rear stand swing arm spools help to make the motorcycle swing arm stand fixed and stable. Easy Installation: Swing Arm Spool is easy to install, they are bolted straight into your swing arm with included mounting bolts easily. Multiple Choices: With plastic o rings and gaskets, various colors for choices, can match your motorcycle perfectly. Excellent Performance: Swing Arm Spool Comes with raised lips on their outer edges for security, and they perform a good performance for a long time.