* When D≦3, the helix angle is 35°; when D＞3, the helix angle is 27°/30°. * Employs the newly developed C-coating treatment, significantly improving tool life. * Suitable for applications requiring strict tolerances in high-precision machining. * Ideal for high-precision finishing of high-hardness steels.
* When D≦3, the helix angle is 35°; when D＞3, the helix angle is 27°/30°. * Employs the newly developed C-coating treatment, significantly improving tool life. * Suitable for applications requiring strict tolerances in high-precision machining. * Ideal for high-precision finishing of high-hardness steels.
