diameter 4mm (D4*50mm ) Twist Drill Micro grain solid Tungsten carbide CNC machine drilling Carbide Drill bits For Metalworking
![diameter 4mm (D4*50mm ) Twist Drill Micro grain solid Tungsten carbide CNC machine drilling Carbide Drill bits For Metalworking](http://ae04.alicdn.com/kf/HTB1StjKLXXXXXczXVXXq6xXFXXXd.jpg)
sku: 32708150202
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$3.59
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