So i've just fitted this block onto my card, without snapping anything!
There's 2 metal rings included in the package, but the instructions dont say what they're for... does anyone know?
Also, should I tighten the water plugs up with a spanner or just tighten them with my fingers?
Spanner or fingers:
And, what are these?
Sorry about the picture's, my camra's a total load.

There's 2 metal rings included in the package, but the instructions dont say what they're for... does anyone know?
Also, should I tighten the water plugs up with a spanner or just tighten them with my fingers?
Spanner or fingers:

And, what are these?

Sorry about the picture's, my camra's a total load.