Active/passive titanium alloy parallel with rounded undercut head for direct post/core build-ups in one appointment. Ideal for glass ionomer/composite cores which require extra retention. Intro Kit: (P680T) Posts Size 3 (0.90mm) x 3, Size 4 (1.00mm) x 5, Size 4.5 (1.14mm) x 5, Size 5 (1.25mm) x 5, Size 5.5 (1.40mm) x 4, Size 6 (1.50mm) x 3, Parapost XT Drills x 6, Metal Wrench A plus Metal Wrench B (one of each)