SPECIFICATION:
Size: Φ1.5/2/2.5/3/3.2/3.5/4/4.5/4.8/5/5.5/6/6.5
FUNCTION:
high hardness, efficient drilling with a longer service life
double helix for easy chip removal
diverse specifications to meet various apertures
Size: Φ1.5/2/2.5/3/3.2/3.5/4/4.5/4.8/5/5.5/6/6.5