Solid Carbide DrillsHolemaking Solid Carbide Drills INDEX High Performance Series DPC - for Universal, Internal Coolant, Ø3~Ø16mm, 3D~20D........................B006 DPN - for Universal, External Coolant, Ø3~Ø20mm, 3D~5D.........................B014 DLC - for Universal, Mini, Internal Coolant, Ø1.2 ~ Ø3.0mm, 3D~20D...........B019 DLN - for Universal, Mini, External Coolant, Ø0.18 ~ Ø3.0mm, 2D~15D.......B021 DMC - for Stainless steel, Internal Coolant, Ø4~Ø20mm, 3D~5D..................B024 DMN - for Stainless steel, External Coolant, Ø4~Ø20mm, 3D.......................B026 DHN - for High temperature alloy, External Coolant, Ø0.9~Ø12mm, 3D........B028 DFN - Flat, External Coolant, Ø3~Ø20mm, 3D..............................................B031 DZC - Step, Internal Coolant, Ø3.3~Ø8.5mm, 3D..........................................B034 DZN - Step, External Coolant, Ø3.3~Ø8.5mm, 3D........................................B035 DAN - Straight flute, External Coolant, Ø4~Ø16mm, 3D~5D.........................B037 General Purpose Series DGN - Universal, External Coolant, Ø3~Ø16mm, 3D~5D..............................B040 Technical Data Recommended Cutting Conditions................................................................B043 Deep Hole Drilling Application Guide.............................................................B046 B002