Likely the same in the US.
https://ncma.org/resource/faq-20-14/
Every type has some specific trade name that rarely matters much - your images look like the type that interlock with a specific keying profile.
Likely the same in the US.
https://ncma.org/resource/faq-20-14/
Every type has some specific trade name that rarely matters much - your images look like the type that interlock with a specific keying profile.