Kawasaki Swingarm Spool Spools Ninja 650 650R ER6N ER6 To avoid shipping delays, please email us which color you prefer when ordering. [Choose from Black, Silver, Red, Blue, & Gold.] This listing comes with: (2) Swingarm Spools (2) 10mm Black 12.9 Grade Socket Bolts Made of Heat Treated, Aircraft Grade Billet Aluminum / No Casting or Molding are involved in the Manufacturing Process Manufactured using 100% CNC Machining and Finished with Anodize Coating Newly upgraded design using Built-in Spacers for a stronger 1-piece Design