Works on 2WD and 4WD pick-ups and vans with electronic shift overdrive automatic transmission: 1991 -current 4L80E transmissions; 1993-current 4L60E transmissions. Weight: 2 oz. Specially designed to work in tight places, and so simple to operate you can do it with just one hand. After insertion into the quick connect fitting, a quarter turn of the tool quickly and easily releases the fitting on the transmission end of the transmission-to-radiator oil cooler line.