Amazon: End Mill Bits
End Mill Sets, Tungsten Steel CNC Router Burrs End Milling Engraving Bits Drilling Hole Tool for PCB Circuit Board, Plastic, Fiber, Wood, Copper 0.5~3.175mm Set of 12. 4.4 out of 5 stars. 282. $20.99. $20. . 99. 5% coupon applied at checkout.
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