These WA 240 otoscope heads have a smaller neck mount and connect to a handle with a smaller neck piece than the most modern handles. In this listing you receive an LED otoscope bulb German made (not WA) that’s a perfect fit in the smaller neck mount of this head. The original bulb used by WA for these heads was 03400 but they don’t made an LED version. These LED bulbs illuminate brighter than 03400 bulbs especially at lower rheostat settings (use less battery power)
