Technical Precision Replacement for Nikon TMS-F Light Bulb 20W 6V Halogen Bulb with G4 2-Pin Base - Clear 3200K Low Voltage Halogen Lamp - 1 Pack - - Amazon.com
Osram 64250 HLX 6V 20W G4 - Lumenet
Carl Zeiss™ Replacement Bulbs for Microscopes and Fiber Optic Power Supplies 6V 20w Halogen Bulb Carl Zeiss™ Replacement Bulbs for Microscopes and Fiber Optic Power Supplies | Fisher Scientific