Exactly what I expected, the instructions say they must be indexed by a dial indicator, I pulled out an old magnet mounting indicator and they were it Within a thousand inches, not trusting my luck, I measured it for a hole just to see how wide it might be. After trying all five pistons and none of them, I was very impressed. Once the pads are lapped in, these brakes perform flawlessly and their durability is evident. But as for the original quality and finish, then A-1