Solid Carbide DrillsHolemaking Solid Carbide Drills Index Appearance Items Series Coolant ØRange DegreeTip AngleWork MaterialsPMKNSHPage High Performance Series DF Series with Flat Tip DFN - External Coolant ∙ 3D DFN3 External Ø2.2~Ø20 180 ●○● B031 DZ Series for Step Hole (Reinforced Shank) DZC - Internal Coolant ∙ 3D DZC Internal Ø3.3~Ø8.5 140 ●●● ○ B034 DZN - External Coolant ∙ 3D DZN External Ø3.3~Ø8.5 140 ●○● B035 DA Series with Straight Flute DAN - External Coolant ∙ 3D DAN3 External Ø4~Ø16 130 ○ ●● B037 DAN - External Coolant ∙ 5D DAN5 External Ø4~Ø16 130 ○ ●● B038 General Purpose Series DG Series for Universal (Straight Shank) DGN - External Coolant ∙ 3D DGN3 External Ø2~Ø16 130 ●○● B040 DGN - External Coolant ∙ 5D DGN5 External Ø5~Ø16 130 ●○● B042 B004