This filter screws into the lens. 

The front lens of the lens is strongly curved and has a permanently integrated lens hood, threads for screwing are not available on the optics. The cap is placed over the lens hood and held in place by latches. I don't see any options for attaching a filter, and I'm not aware of any factory solutions or products from other manufacturers. 

According to the K&F concept homepage, the surface treatment for this adapter is "anodized" and that means anodized. Anodised layers are used to improve the appearance and functionality of the surfaces of aluminum materials; With the adapter, the aspect of wear resistance (contact surface to the camera) should play an important role (a black lacquered connection surface would probably start to "dissolve" after a few adaptation processes). 

The head is removable and replaceable, but not recommended, because the factory fixed clamp base screws are played screw glue, help to better fix the clamp base, if you replace the other head, do not rule out the use of the process will have loose phenomenon, you need to use the hexagonal wrench to fix from time to time! 

Your another style head could be used on our tripod as long as it has a 3/8" standard screw interface