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.
12 in a pack
Description
Tooth Model Torque Spring Small Middle Big Stainless Steel 10P/Bag (Middle, 0.019X0.025)