Flexi-Flange Fiber Introductory Kits - Size 1 (Red) / 2 (Blue)INCLUDES: 6 posts, 1 tap, 1 primary reamer, 1 countersink drill Size 1; 6 posts, 1 tap, 1 primary reamer, 1 countersink drill Size 2; External Wrench (Fits both post sizes), 1 Depth Gauge. These are the only fiber posts to provide superior retention and stability without requiring the use of a bonding agent! They provide the highest fiber post in tooth retention while producing minimal stress to the root.