The used DJI Osmo Gimbal Extension is a 59 inch adapter cable that allows remote operation of the Osmo or Osmo+ gimbal via the Osmo handle. Key features include:

Control The Osmo Gimbal Remotely. The DJI Osmo Gimbal Extension is a 59 inch adapter cable that allows remote operation of the Osmo or Osmo+ gimbal via the Osmo handle.

Compatibility. You can attach this gimbal extension to your Osmo or Osmo+. The gimbal extension is not compatible with the Osmo Pro and its X5 gimbal.