센터 드릴 CODE NO Diameter Length of Cut Overall Length Shank Dia ΦD L1 L Φd CDMN 1003 1.5 1.0 45 3 CDMN 1504 2.2 1.5 45 4 CDMN 2006 3.0 2.0 50 6 CDMN 2506 3.7 2.5 50 6 CDMN 3006 4.5 3.0 55 6 CDMN 4008 6.0 4.0 60 8 CDMN 5010 7.4 5.0 65 10