This worldwide accepted post technique is now with unique intermediate sizes .045 and .055. The Kit contains seven sizes ranging from .036 to .070 which allows the flexibility to cover all your requirements for post placement. Each of the stainless steel posts and corresponding safety tip spiral drill is color coded. The serrated, vented posts permit maximum retention with easy insertion and allow positive seating without causing stress or trauma to the treated tooth. Post and drills may be autoclaved or cold sterilized. Kit: 28 Vented Posts (4 each of 7 Sizes), 7 Drills (1 each of 7 Sizes) Features and Benefits Stainless steel posts Serrated, vented posts