Welch Allyn 2.5 V Vacuum Lamp for Standard Laryngoscope Blades (Sizes #2 to #4) in Series 634, 640, 664, 674, 680, 684, (Size #1) in Series 640, and (Size #3 and #4) in Series 690, 692, and 694; Also for Transilluminator (#40415); Qty. 6