The Waring/Qualheim 502696 Square Drive Stud and Coupling provides reliable power transfer between the motor and blade assembly in compatible blenders used as commercial kitchen equipment. This component works by connecting the motor drive to the blender jar coupling, allowing rotational force to be transmitted smoothly during operation. The square drive design helps maintain proper a... https://www.partsfe.co.uk/waring-qualheim-502696-square-drive-stud-coupling