778 CONTACT INFORMATION For more information please call +1 330 928 7744 or send an email to ataorders@atatools.com External radius Internal chamfer with SKM shape Internal chamfer with WKN shape The intersecting points of the countersink (WKN) and cone shapes (SKM) form the unique RADIUS+CURVE guiding-rounding- deburring system External chamfer with SKM shape External chamfer with WKN shape Internal radius RADIUS BUR LINE 11 Index 10 9 OIL 8 7 6 5 4 3 2 1
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