AS ISO 23727:2021 identically adopts ISO 23727:2009, which provides the interchangeability of attachments on wheeled loaders by establishing common dimensions and clearances for a coupler. Applicable to wheeled loaders as defined in ISO 6165 with an operating mass of between 8 000 kg and 17 500 kg. Alternative coupler designs and dimensions are permitted, but might not provide broad interchangeability of attachments.