This is the two piece version, I also have a one piece version. It fits a Nikkor 14-24 lens and it fits a Nikkor 24-70 lens. The plate fits a Manfrotto style 50° quickrelease. Requires an M3 screw and nut to snug up on lens. I used an M3 thumbscrew and heat insert nut. The tilt/offset is to accommodate the groove underneath and switch on top.