Full Specification ; GAN, Insert rake angle, 25.000 deg ; Grade, Grade, H25 ; Gradetype, Gradetype, Carbide Uncoated ; IH, Insert hand, Right. Full Specification ; GAN, Insert rake angle, 25.000 deg ; Grade, Grade, H25 ; Gradetype, Gradetype, Carbide Uncoated ; IH, Insert hand, Right. การเลือกใช้เกรด H25 นี้