For Ikelite DSLR users

[CricfanSD]

http://www.ikelite.com/faq/faq_4portlock.html

Design Changes to Digital SLR System effective November 1, 2009

Starting Nov. 1, 2009 our simple and reliable port system will
feature four locks for added user confidence and fail-safe assembly.

All existing port components with the exception of the #5510.10
Superwide Port Body are fully functional with the new port system.
Please read further for more information on changes to the Superwide
Port body.