Fast Fill. Characteristics: - Motorized device for Injecting soft gutta-percha. - Works with the universal GP Pellets ( No Special Cartridge ). - Comes with 2 tips. Fast-Pack: Characteristics: - For Down-packing ( Pen for 3D Obturation System ). - Irrigation Activation by heating. - Removing old GP in Retreatment cases. - Comes with 3 tips.