Mushroom looped archwire made of CNA Beta III Nickel-Free wire, an advanced special-memory alloy material. Improved looped shape increases the efficiency of space closure, anterior intrusion, retraction and elastic engagement. Unlike traditional T-looped archwires, the rounded gingival portion of the loop is more anatomically shaped, resulting in a tissue-friendly appliance that increases patient comfort and satisfaction. Recommended sizes: 24-40mm for loop activation between lateral and bicuspid; 52 and 56mm for activation between cuspid and bicuspid. Archwire segments can be activated independently. Lower force, smooth surface, gradual force decay.