The NF-06 lens replacement foot has built-in-dovetail mounting, 
light-weight, low profile, and provides the best possible stability for your Lensyour lens

NF-06 FOR Nikon Z 800mm f6.3VR S,

Nikon Z4OOmm f2.8TCVR s

Nikon z 600mm f4 TCVR s