Abstract: A device for manipulating threaded connectors is disclosed, the device being particularly well suited for manipulating line fittings. The device includes a socket and compact drive assembly which are configured to assure reliable transfer of power to the socket from a driver releasably attachable with the device. The socket has a split side wall with a gap defined thereby which is smaller than the fitting to be manipulated, and has facets at the inner periphery thereof sufficient in number to prevent substantial linear movement of the socket in any direction having at least a component normal to the axis of rotation of the fitting once the fitting is engaged. A fully integrated torque reaction unit, a rotation inhibitor for stabilizing the socket relative to the housing when not under power, and various sockets and attachments are described.