【K&F】M42-NZ K&F Concept is a one-stop refined photographic solution provider. K&F Concept specializes in design. research, manufacturing, and marketing of photographic accessories.K&F committed to creating professional and innovative products backed by friendly, responsive service to delight our distinguished customers around the world. Features: High quality and compact. Made of brass and aluminum (not plastic). 100% Brand New Color: Black Suitable for: M42 mount lens Nikon Z6 Z7 camera Note: Specifically refer to the camera manual Although the lens will fit physically, automatic diaphragm, auto-focusing, or any other functions will not operate while using this adapter.There is no electrical contacts in the adapter ring.