D938 Series, 12D-15D Deep-hole Inner Cooling Twist Drill

D938 Series, 12D-15D Deep-hole Inner Cooling Twist Drill. New substrate 
material, toughness and wear resistance of perfect balance. Using unique post-
processing of coating and AlTiN-nano coating. Optimize the groove profile and design 
of drill point, With good chip evacuation performance and guiding capability, super 
self-centering performance and chip breaking performance.
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ADD:No. 69 Xinglong Road, Huli District, Xiamen
Factory Address:Xiamen Tongan Industrial Zone Set