The adapter is new, top of the line quality, deluxe.
Made of aluminum (camera body mount) anodized black, and brass (lens mount) chromed silver, with 1/4″ and 3/8″ tripod mount threads.
Also, it is very well made (of brass and aluminum) adapter, which will allow you to use B4 2/3″ mount broadcast lenses on Olympus M4/3 mount camera.
1. Put red marks of the adapter and lens collar together.
2. Turn the adapter anticlockwise till the fixative click.
3. Set B4 lens.
To remove the adapter you should turn the adapter clockwise.
Lens: B4 2/3″ Canon Fujinon Nikon lens
Panasonic AF100 / AF101 / AF102
Panasonic G1, GH1,GH2, GH3, GF1, GF2 G2, G3
Olympus PEN E-P1, E-P2, E-PL1, E-P3, E-PM1, E-PL3, OM-D E-M5
Also: The NEW Blackmagic Design Cinema Camera with MFT (Micro Four Thirds) Mount