First of all, the new ProStaff Six-One 95 BLX has a 16x19 string pattern, so 16x18 grommets won't fit. Secondly, there were no K nor BLX versions of the ProStaff Six-One 95 BLX so the grommets from the K6.1 95 or BLX6.1 95 will not fit. The previous version of this racquet was the PS 6.0 95 Original. They are two completely different lines of racquets (the ProStaffs are box beam, the non-ProStaffs are wide oval beams).