Solid Carbide Drills DCN Solid Carbide Drills (for Centering) 外冷中心鎢鋼鑽頭 Drilling Product Spec. ‧ Spotting Drills Countersink angle 60° Countersink angle 90° ‧ Better Tool Life ‧ Competitive Price ‧ Customized Service ‧ 刀具壽命佳 ‧ 價格實惠 ‧ 客製化服務 C061