Drill series for processing multilayer board such as FR-4, Halogenfree, High-Tg & Special copper plate (Φ0.15 - Φ0.45)

The design that emphasizes the balance between hole position quality and hole inner wall quality is suitable for general multilayer board. 

The design of the point angle which make a point of the hole inner wall quality realizes the improvement of the hole inner wall roughness and the burr around the hole by the good sharpness and good chip discharge.