20pcs 0.5mm Carbide CNC Engraving Circuit Board Micro PCB Drill Bits - 0.5mm,2Set (20Pcs)($14.99Value)
Specification: Cutting edge diameter (CED): 0.5mm; cutting edge length: 7mm; shank diameter: 3mm / 1/8" (approx.) overall length: 38mm / 1-1/2" (approx.)
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