Spare parts for nets

[Schmetterboy]

Hi there,
I'm looking for spare parts for some of our club nets. We've different brands and models and we need to repair some of them.
Our club is based in Spain and I wonder where we could get spare parts such as metallic net clips (not the black plastic crap ones), either the chain or the "pellet" ones. We'd need also cotton cords.
Any help? Thank you in advance.
Cheers.