12 serrated posts with flange (4 posts of each size: 0, 1 & 2), 3 primary reamers, 3 countersink drills, 1 extender, 1 wrench, 1 depth gauge & 5 Gates Glidden drills.
The patented Flexi-Flange is a "specific-use post" with a parallel-sided, threaded, split-shank design. Its scientifically designed countersunk flange is for cases lacking supportive coronal dentin, along with a second tier, which produces an intimate fit with optimum metal-to-dentin contact for maximum stability. Split-shank gradually collapses as the post is inserted into the canal, effectively reducing insertional stresses.