Star Wars X-Wing (2nd Ed): Scum and Villainy Maneuver Dial Upgrade Kit - Rules of Play says:

Customize and enhance your maneuver dials as you fly free alongside the Scum and Villainy with the Scum Maneuver Dial Upgrade Kit for X-Wing™! This pack includes three detailed plastic protectors for your ships’ maneuver dials. In addition, you’ll find dial ID tokens to easily identify which dials match your ships in the heat of battle. Choose your maneuvers quickly and stylishly with the Scum Maneuver Dial Upgrade Kit.