Features:  Linear cutting edge with high strength.

Optimized drill point structure with better cutting performance.

Combination of drilling simulation and experiments for optimized performance.

Double margin design improve the machining stability.

Special surface treatment guarantees high efficiency machining.

Application range:

General drills for high efficiency machining of P (steel)、M (stainlesssteel)、 K (cast iron ) and various materials.

Stable and enduring tool life

GD series dirll

Tool can still work

Tool breakage

Depth of drilling

Quality of hole wall

Wear, can be machined continually

Cutting edge cracking failure

Wear failure

 Wear, can be machined continually

Cutting edge cracking failure

Wear failure

Outstanding machining precision

Excellent chip breaking performance