Not sure what is it made for. It seems to be for some kind of filter or maybe lens. Exterior is 7X7X5 cm.
It has couple cracks on the clear plastic part. But it still works good. On the bottom part it has 52mm ID hole.
It has couple cracks on the clear plastic part. But it still works good. On the bottom part it has 52mm ID hole.
Shipping is free within USA and $5 worldwide.