Thank you for viewing this product. Product: ・1 Ball Popper for Logitech MX ERGO (S) Condition: ・New, unused ※This is a ball popper that allows for easy removal of the trackball at any time by permanently attaching it to the Logitech MX ERGO (S) body. The ball popper's tip pushes out the trackball when the MX ERGO (S) body is tilted from a 20° angle to 0°. With a very simple action, the trackball is removed in an instant, making cleaning and maintenance of the MX ERGO (S) more enjoyable and easier. ※The tip of the ball popper is designed to follow the curved surface of the trackball, reducing unnecessary stress when pushing out the trackball and achieving smooth removal. Furthermore, the ball popper itself is designed to tilt in accordance with the removal angle of the trackball, so there is no worry of damaging your precious MX ERGO (S) body. In addition, due to the new design of the ball popper's diameter and contact surface, it is no longer necessary to fix it to a metal plate with double-sided tape or magnets. It stays firmly attached to the body even when not in use, so you can keep it attached at all times without worrying about losing it. ※As shown in the third explanatory image, insert this product into the ball hole of the mouse body and attach the metal plate that comes with the body to complete the process. * Due to the size and weight of the mail, it will be packaged in a clear pocket and shipped in an envelope. * We will ship as soon as possible on the same day, or at the latest, the next day. * No discounts. * Immediate purchase OK. If you have any questions or concerns, please feel free to comment. Thank you very much.