1/4" Jack in Taylor's Endpin Block
 

It looks that in its 9v endpin block Taylor uses a custom Neutrik switched stereo 1/4" jack with sleeve connector normally-open and other two normally-closed. I haven't found anything like that on Neutrik's web site, nor on Amazon/eBay/Mouser or other online sources.

Are those Tailor-like or similar connectors available anywhere?
Basically, I am looking for a jack with a normally open sleeve or ring connector. I'd appreciate any links.