3 Flute Countersink Boring Drill Bit 90Degree Chamfering Tools Wood Metal Chamfer Drill 6.3/8.3/10.4/12.4/16.5/20.5mm

3 Flute Countersink Boring Drill Bit 90Degree Chamfering Tools Wood Metal Chamfer Drill 6.3/8.3/10.4/12.4/16.5/20.5mm

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