0.5mm/1mm M54 Spacer
$11
Available from Cloudbreak Optics when we last checked. Sold from the shop’s own store; the price there is the one that counts.
0.5mm/1mm Spacer is designed for those who have vary strict requirments of back focal length of the optical system. Combined with our Adapter Kits, the spacer can be used for precise adjustment.
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