New Hejnar Photo Quick Release foot replacement for:
AF-S 400mm/f2.8-ED-IF (version I & II) lens
AF-S 400mm/f2.8-ED-IF VR lens
AF-S 400mm/f2.8-ED-IF VR-II lens
AF-S 600mmf4D-ED-IF lens
AF-S 600mm/f4G ED VR lens
AF-S 600mm/f4G ED VR-II lens
It is the best quick release system for tripods and monopods when combined with Arca style ball head and quick release clamps. International standard dove-tail rail, compatible with Arca-Swiss type quick release clamps