It's a high-quality aluminium screw-in adapter.
Technical data:
Thread 1: 1/8 "
Thread 2: Dash 6 (9/16 - 18 UNF)
Material: Anodized aluminium
| Manufacturer: | Arlows | 
| Category: | INCH THREADS | 
| Item number: | AR1547 | 
| Angle: | Straight | 
| Thread: | Dash 6 | 
| Product weight: | 0,10 Kg |