Well one parts was perfect style, and one part was ???
Perfect one was correct, had correct bulb type collar for 1156
?? one was for an 1157 style bulb, that's the collar...
See attached, I guess someone just put wrong wire in the bag...but what is it even for? The reverse socket are different with lock bend tabs...might be for different year car than mine. Socket on the left is the correct one - see pic