Whats the difference between these two pics?
Im refering to the brakes and nothing in the back ground

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Ok so its the bleed nipples on the calipers, while the 1st one is correct for bleeding the orientation on the caliper is incorrect, on the second pic the orientation is correct but the bleed nipples are the wrong way round.
The brakes have been fitted to a sapphire in the past so I should imagine they were fitted incorrectly??
The brakes are AP4pot CP5100 s, can anybody tell me what piston sizes are in there and any trouble with having run them the wrong way round, apart from poor performance or squealing? And should the anti rattle plate be at the top or bottom of the caliper, Ta?
Im just going to swap the link pipe for the nipples anyway