
Originally Posted by
RichardH
Maryland Metrics is quite a resource! Can anyone tell me what the fitting is called / what the specs are?
I'm sure it's a common item, but getting the right one is harder. (E.g., for air tools, there are like 10 different QD types, but only 1-2 popular versions.)
Thanks!
The site can be a little tough to navigate. 
They are a 9mm QD specifically, I believe a Rectus 21KA series. Here is the page.
http://mdmetric.com/rectus/products/...ka/default.htm
Long arc, short arc, heliarc and in-the-dark!