Abstract: A slender paint brush holder for attachment to a rotary drive member, such as an electric power drill for rotating an elongated, slender paint brush about an axis perpendicular to the elongated handle of the brush, in order to spin-clean the brush. The holder includes a pair of longitudinally spaced, aligned V-shaped recesses for receiving the handle of the brush, a spindle for reception within the chuck of the power driven drive member, and a transverse notch for receiving an elastic binder member fastened to the holder and across the brush handle.