Used for cutting, leveling, cleaning, shaping teeth, bone, and root canals in dental treatment. Features: - Thread: Twist thread. - Cross section: Square. - Cutting efficiency: Moderate. - Work efficiency: Safe. - Usage: together with enlarge files. - Function: Enlarge and clean root canal. - Operation method: Lifting and rotating. - Application: Straight and mildly curved root canals. Specifications: - Size: #55. - Length: 25 mm. - Material: Stainless steel.