V0 is similar to Gates drills, which makes the formation of root canal orifice;

V1 prepares the 1/3 part of the middle root canal; V2 prepares the 1/3 part of middle-bottom root canal. T1, T2 & T3 prepare and complete the root zone.

A: Even, smooth and continuous rotation speed. (260-350 rpm)

B: Good flexibility of the file needle, not easy to damage the root hole and edge wear.

C: Each file needle is equipped with a certain amount of torque, when reaching the maximum torque, it will move reversely or stop automatically to reduce metal fatigue and fracture.