This is a quick guide to help you identify the size of the Storz Connection
of an existing adapter you may have.

This guide does not include identifying thread sizes.

To identify your Storz Connection size you need to measure the distance between the lugs, the following image shows this.

Storz Measurement

You can match up your Storz Connection using the following table.


Storz Size Distance between Lugs
25 31mm
38 51mm
50 66mm
65 81mm
75 89mm
90 105mm
100 115mm
125 148mm
150 160mm