: Zhongzuan (Chongqing ) Precision Tools Manufacturing Co., Ltd.

Professional manufacturer of drill bits and diamond tools in China.

High Speed Steel Twist Drill Bits Metal Drilling Bit

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Zhongzuan (Chongqing ) Precision Tools Manufacturing Co., Ltd.

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High Speed Steel Twist Drill Bits Metal Drilling Bit

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High Speed Steel Twist Drill Bits Metal Drilling Bit

High Speed Steel Twist Drill Bits Metal Drilling Bit 1. HSS twist drill bits are widely used to cut round holes.A cutting point is on the top of a cylindrical shaft with spiral groove and chips will ...

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5% cobalt Metal Drilling Bit

M35 HSS Metal Drilling Bit

118 or 135 degree drill bits

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