This is only the lower ring part for a rangefinder Canon lens hood. It has a 40mm diameter mounting screw on the bottom and a female thread of approximately 44mm for attaching the hood on the top. The item will be shipped via Yu-Packet Post Mini. This is being sold as a junk item. Please purchase only if you understand that this is a junk item. Returns are not accepted to prevent product substitution. #canon #lenshood #lensfilter