10 Pcs Dental Orthodontic Torquing Torque Rectangular Spring Anterior Wire L M S

Application torque spring before the main arch wire with 0.46 mm x 0.64 mm stainless steel wire, the torque hole through the main arch wire fixed on both ends of the spring, strength of the single spring torque with crowns are angled lip not to exceed 90°, strength direction for the direction of the coil spring open.