A device, for rotationally driving an element, including a rotationally-driven member at a front of the device and engageable with, to transmit rotational drive to, the element. A formation is shaped to contact, to transmit a reaction torque to, an attachment. A rearward-facing portion is at the rear, or rearward, of the formation. An arrangement engages, to act between, the rearward-facing portion and the attachment to rearwardly urge the attachment.