What disc brakes are these?

Hey everyone,

Just finished replacing my rear drum brakes yesterday and all went well, However I ended up with a question on the front brakes... A previous owner put discs on, however I have no idea who the manufacturer of these are. anyone have any ideas or have the same setup? pads and rotors seem to have plenty of life left, but I want to make sure I'm prepared for when I do need to replace them. Looks to be a four piston setup.



Any help would be much appreciated!