I amassed a massive amount of step-up and step-down rings for any potential combination of lenses and filters in my collection.  It's time to downsize so I'm offering them here.  Some pictures show a metal ruler for reference when the size is not printed on the ring -- this is shown just for reference; all measurements were taken with dial calipers.  Unless otherwise noted, all rings are in very nice shape with minimal wear.

I combine shipping -- please place the items you'd like in your cart and then request a total so that I can remove the excess shipping.

Lightweight aluminum construction with a durable black anodized finish.  I had this ring turned to be able to mount smaller filters on a 750 Apo Germinar.