What Site Sells A Good Selection Of External Filter Spares?

[MermaidMel]

I want to look at connectors and things, I have round U shaped but I want square U shaped if you see what I mean? The bit that goes over the back of the tank?

 

[holidayinn]

Maidenhead Aquatics have an online spares store, www.maidenheadaquatics.co.uk. Just beware of delivery times/estimates, as not all items are kept in stock.

 

[MermaidMel]

I am after 2 x the thing in the pic that goes over the top of the tank - the little arm that is horizontal straight on top then either end is vertical straight to hold the pipework in place - what are they called, does anyone know?