These are for the83mm mounting pitch standard (NH-D15, D15S, D15 G2, NH-U12P, etc.). Long story short. Set: 2x NM-IMB4 mounting bars, blue spacers (1700), black spacers(1200/115x) & thumb screws. Sent it back but in my cloud of annoyance, I left the i7 mounting plate on the back of the board!