Fantasea Bayonet Female on M67 Housing MB1The Bayonet Female on M67 Housing MB1 is a female bayonet that attaches to almost any flat housing lens port or lens holder featuring a 67mm thread. When mounted on the housing or lens holder, it allows easily installing and removing wet lenses (equipped with a compatible male bayonet) from the housing lens port or lens holder with a 1 4 turn. Compatibility Compatible with almost any housing flat lens port featuring a 67mm thread Compatible with the