Flexi-Post size yellow #0, red #1, and blue #2 stainless steel Introductory Kit: 12 stainless steel serrated posts (4 of each size), 3 primary reamers, 3 secondary drills, 1 extender, 2 wrenches, 1 depth gauge and 5 Gates Glidden drills. Introductory 12 post kit