These are two Melles Griot HeNe Laser Tubes emitting at 632nm. One of the lasers is model 05-LHP-111 the other is 05-LHP-321. The tubes were remover from a working environment, sadly the HV cable was cut to prevent further use. Other tubes we tested connecting a new HV cable removing the back seal, were found to be operational. Since we cannot test these two tubes they are sold as as-is or for parts.