6-4 Titanium direct thread adapter. This adapter has an internal hex on the backside. Specs are as follows:
It has a (1-3/8 x 24tpi) external thread.
The external hex accepts a 1" wrench and the internal hex accepts a 3/4" socket.
Overall Length is 5/8"
Internal threads available are 1/2"x28tpi, 5/8"x24, 1/2"x36tpi and others available as a custom order.
Product weight is 40 grams