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Fully Ground-Twist Drill Bits
![Fully Ground-Twist Drill Bits Fully Ground-Twist Drill Bits](https://image.seohost.cn/storage/6910/product/20190121/20190121120552_71944.jpg)
specification
Fully Ground-Twist Drill Bits
Description: HSS twist drill, fully ground with bright finish/black finish/ Tin Coating/ Black & Gold. 118 degree or 135 split point.
Usage: ideal for drilling on mild steel, copper, Aluminum, Zinc alloy etc.
Material: high speed steel, HSS4241, HSS4341, M2, M35, M42
The twist drill bits are drill bits manufacturer in China directly, contains high performence with low cost.