1 4 1 8 adaptor
- 1 4 to 1 8 collet adaptor for die grinders
- 1 4 to 1 8 headphone adaptor
- 1 4 to 1 8 npt adaptor
- 1 4 to 1 8 audio adaptor
- 1 4 female to 1 8 male adaptor
- 1 4 inch to 1 8 inch adaptor
- 1 4 bsp to 1 8 bsp adaptor
- 1 4 npt male to 1 8 bsp female adaptor
- 1 4 female x 1 8 male bsp reducing adaptor
- 1 8 npt to 1 4 bsp adaptor