1. Thread Converter / Adapter M15x1 RH Female to 0.578x28 (37/64"-28) Male 
2. 35 mm /1.4" Length
3. Diameter of Internal Hole : 10 mm / 0.39"
4. Steel , Black

NOTE:

* Total 13 sizes Barrel thread to 0.578x28 (37/64"-28) Male Converters are on sale online under TUFFORCE Brand as list below,      

** All international shippig is available without refund if lost outside USA.

*** shipping from Livonia, Michigan, USA