JBR hats are made by composite specialites. heres the link.
http://www.compositespecialties.com/injectors.htm
hope it helps you out
Bit of advice from experience with the jbr hats and similar.....first thing to do is take the round allen bolts out and replace them with standard headed allen bolts. The two JBR hats we have had, the butterflies tend to move a bit and start sticking. After a few adjustments the button heads are shot. even thread lock and cranking down the bolts wouldn't keep them from shifting around.