Material: carbon steel black chamfering machine.
Including hex wrench
Function: it can drill a screw hole and a sink hole at the same time, and fix the screw cover on the same axis.After tightening, the screw cap is located below the sub-plane of the board!
Suitable for drilling machine with chuck or joint, suitable for drilling in hardwood and wood layer
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Specification
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Diameter
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Total length
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Material
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5#
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1.87mm
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49.63mm
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HSS 4241
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6#
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2.33mm
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56.57mm
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8#
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2.74mm
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68.67mm
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10#
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2.81mm
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68.84mm
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12#
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3.53mm
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70.5mm
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