Solid Carbide Drills DTN Solid Carbide Drills (for Spotting) 外冷定點鎢鋼鑽頭 Drilling Product Spec. ‧ Spotting Drills Tip angle 90° Tip angle 120° ‧ Better Tool Life ‧ Competitive Price ‧ Customized Service ‧ 刀具壽命佳 ‧ 價格實惠 ‧ 客製化服務 C055