Detail : - The outstanding quality of the Metal injection-mold body allows extra strength and increases the durability of the tie wings. - Fully interactive system allow for outstanding rotation and torque control while lessening the friction for each case. - A patented double-layered cross-etched base is designed to strengthen the bonding retention. Easy and clean debonding with the beveled base edges giving no-stress experience. - A rounded edge design helps with precise bracket placement and reduces the patient's discomfort.