A torque head assembly and method of capping effective to cap a variety of trigger spray cap bases or common caps to a spray bottle or container includes a drive roller mounted on a drive gear. The drive gear is in meshed gear communication with a plurality of train gears enclosed within a generally C-shaped driver housing wherein the a distal train gear engages a driven gear upon which a driven roller is mounted. An actuator allows the driver housing of torque head assembly to approach a variety of trigger spray cap bases or common caps within a plane generally horizontal thereto and at least partially co-planar therewith so as to capture the same between the dive roller and the driven roller and to thread mount the same onto the spray bottle or container.