Filter query

[Rustang]

I ordered one of these from 365: Optolong CLS-CCD Filter for Canon EOS APS-C Cameras (365astronomy.com)

But I got one that look's like this! Optolong CLS CCD Light Pollution Filter EOS Clip - Rother Valley Optics Ltd

It still says CLS CCD but it doesnt stay in my camera (Canon 600D) as it doesnt have the "arms" like in the first link to help keep it in so am I missing something? how is it a 'clip in' filter  !?

I have emailed 365 but had no response yet !.

Edited November 30, 2021 by Rustang

[NGC 1502]

You’ve had no replies and I haven’t a clue myself about this…….perhaps if you post in the imaging section someone who knows the answer may help…..