20.5mm 90 Degree 3 Flute TiAlN Countersink 6571012 4 PKT x 50pcs QUALITY

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20.5mm 90 Degree 3 Flute TiAlN Countersink 6571012 4 PKT x 50pcs QUALITYThree Flute Countersink 90 degrees, DIN 335, UNI Countersinking Counterboring screw holes for Countersunk screws acc. to DIN 963, 964, 965, 966, 7513, 7516 For Countersunk screws acc. to ISO 2009, 2010, 7046 1, 7046 2, 7047 Chamfering of tapping holes For use in machine applications. Type N For non ferrous, Type UNI For difficult to machine materials