Johnson-Promident’s Parallel-Sided Posts are an internationally accepted post technique for core build-ups and casting techniques. The posts are serrated and vented to permit maximum retention with easy insertion and positive seating without stress or trauma. Chairside kit contains seven standardized sizes ranging from 0.36"/0.9mm to 0.70"/1.75mm providing flexibility for all post placement requirements. Color-coded posts and corresponding safety drills.