Metal area is approx 1/2" and the tips have screw threads. It's a pair of 1971 SONY headphones and I believe these were modded with these connectors.
Nogizaka2501
joined 1 year ago
Metal area is approx 1/2" and the tips have screw threads. It's a pair of 1971 SONY headphones and I believe these were modded with these connectors.
Another (better?) image.
https://imgur.com/BLIvbnD