1.75mm height with 5mm diameter and above. 2.Europe imported diamond emery ,quality guarantee,good drill bits for you.

1.Height of drill bit : 75mm,

2.as per Schiatti drill machine standard.

3.Europe imported emery grit,guarantee long service life and good sharpness,good balance. 

Core drill bits with screw and 75mm 3'' height for glass holing