Colkin P filter system help

[SAVA9E]

Right ive bought myself a Colkin p filter system with a job lot of stuff from ebay, it cam with a 58mm ring to attach it to a 58mm lens, simple.

Now i have a 67mm and a 72mm ring too, see pic below.

Ok so the 58mm slides into the filter holder fine but there is no way the others will, am i missing something or are the rings for a different system.

 

[SAVA9E]

Ignore me im being thick, seems i was told i had a P system holder and it appears i have an A system holder.

 

[Bristolian]

Beat me too it

 

[SAVA9E]

Beat me too it

Thanks anyway

 

[ukcyberboy]

I havent got my A system with me, friend borrowed it.
I would suggest measuring it and using the dimensions for someone to compare for you.