Holemaking Tools Index Solid Carbide Drills Degree Tip Appearance Items Series Coolant ØRange Page Angle DZ Series with for Step Hole (Reinforced Shank) DZC Solid Carbide Drills (for Step hole) DZC Internal Ø3.3~Ø8.5 140 C044 內冷階梯鎢鋼鑽頭 DZN Solid Carbide Drills (for Step hole) DZN External Ø3.3~Ø8.5 140 C045 外冷階梯鎢鋼鑽頭 DF Series for General Purpose (with Flat Tip) DFN Solid Carbide Drills - 3×D (with Flat Tip) DFN External Ø3~Ø20 180 C048 外冷平底鎢鋼鑽頭 DG Series for General Purpose (Straight Shank) Drilling DGN Solid Carbide Drills - 3×D (for General Purpose) DGN External Ø2~Ø16 130 C052 外冷泛用鎢鋼鑽頭 DGN Solid Carbide Drills - 5×D (for General Purpose) DGN External Ø5~Ø16 130 C054 外冷泛用鎢鋼鑽頭 DT Series for Spotting DTN Solid Carbide Drills - Tip angle 90° (for Spotting) DTN External Ø1.3~Ø16 90 C056 外冷定點鎢鋼鑽頭 DTN Solid Carbide Drills - Tip angle 120° (for Spotting) DTN External Ø3~Ø16 120 C057 外冷定點鎢鋼鑽頭 DTN Solid Carbide Drills - Tip angle 140° (for Spotting) DTN External Ø3~Ø16 140 C060 外冷定點鎢鋼鑽頭 DTN Solid Carbide Drills - Tip angle 90°, Long shank (for Spotting) DTN External Ø4~Ø16 90 C058 外冷定點鎢鋼鑽頭 DTN Solid Carbide Drills - Tip angle 120°, Long shank (for Spotting) DTN External Ø4~Ø16 120 C059 外冷定點鎢鋼鑽頭 DTN Solid Carbide Drills - Tip angle 140°, Long shank (for Spotting) DTN External Ø4~Ø16 140 C060 外冷定點鎢鋼鑽頭 DC Series for Centering DCN Solid Carbide Drills - Countersink Angle 60° (for Centering) DCN External Ø1~Ø5 120 C062 外冷中心鎢鋼鑽頭 DCN Solid Carbide Drills - Countersink Angle 90° (for Centering) DCN External Ø1~Ø5 120 C063 外冷中心鎢鋼鑽頭 C001