Reference of front cutting-edge profile of center drill bit/chamfer drill bit/profile drill bit
²ÄÖÖ£ºSKH4C/SKH55A/SKH57A/ASP60C/K10/HRF10/MR11/PR40/VRA201/VWA441/VWA431

Situation of general drilling holes
Alloy steel, heat treatment steel, stainless steel
Cutting-edge profile after point angle changes
Even the same helix angle, when point angle is 118¡ã,
cutting-edge is straight line, but if 135¡ã it is an internal
cylinder, if 90¡ã, it is a cylinder.

Strengthened and toughness shear-steel, hard materials
Cast iron, aluminum
Plain shank drill bit for high hardness application
Masses drill for machining high manganese steel
¡ïWe can also profile and precision grinding machining according to requirements of drawings, samples.