Vintage Singer sewing machine bakelite work light, mounting screw included. Features a switch on the body and comes complete with the metal reflector and glass lens. Very nice vintage condition, good working order. The wiring remains in good usable condition. Compatible with machines that have the mounting point on the rear of the arm (see last picture), including the 15-90 / 15-91, 66, 128, etc. Genuine, original Simanco part Cat-S4