Solid Carbide Drills DZC, DZN Solid Carbide Drills (for Step Hole) 內冷 & 外冷階梯鎢鋼鑽頭 High Performance High CP Value Drilling FEATURES ‧ For drill a hole with counterbore, countersink, or chamfer ‧ For steel,alloy steel,cast iron ‧ Customized Service ‧ 專為沉孔加工、導角加工設計 ‧ 適用鋼、合金鋼、鑄鐵的孔加工 ‧ 提供客製化服務 C043