NM Laser Products LST200SLP Laser shutter, INPUT aperture

Description

This is a very nice LASER Shutter 12VDC. Pulled from scientific equipment.
(Please note, I have 6 piece of this item, 4 of them come with the mounting bracket as seen in the first picture, the other two come with no mounting bracket as shown in the last picture - if you buy between 1-4 you will receive all with the brackets, but if you buy all, the two will have no mounting brackets, please see pictures)
Item is Guaranteed to be in working condition.