The SecuFirm2 Mountig Kit for LGA115x is compatible with the following CPU Coolers: NH-C12P, NH-C12P SE14, NH-C14, NH-D14, NH-D14 SE2011, NH-L12, NH-U12, NH-U12F, NH-U12P SE1366, NH-U12P SE2, NH-U9, NH-U9F, NH-U9B, NH-U9B SE2