Help me to identify these disc brakes

[waltt]

I've got an used bike that needs some serious tlc. I also want to replace the brake pads as they are worn out, yet, I can't find what disc brakes are these? Does anyone know? (pics below) Thanks!

http://tinypic.com/r/20r31xk/5
http://tinypic.com/r/33ugbiw/5

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[Bill]

What kind of bike is it as more info is needed.

[bobtravers]

Any marking on the inside??

What levers you got??

[torquecyclerepairs]

They look like two different calipers, you'd probably be better off taking the pads out and matching them up to a new set in your local bike shop