BB Carbide Drill 8xD CNC Long Deep Hole Machining Coated Flute Internal Coolant for Steel Metal Tool Diameter 3-16mm Hole Diameter:11.6x12x114x162 3 D14 45 100 4T

3 D14 45  100  4T 14R0

copper and other non-ferrous metal machining

It is a versatile grade for steel machining

BK2060 Series

the hexagonal hole should be punched

BB Carbide Drill 8xD CNC Long Deep Hole Machining Coated Flute Internal Coolant for Steel Metal Tool Diameter 3-16mm Hole Diameter:11.6x12x114x162 3 D14 45 100 4TBB Carbide Drill 8xD *It is recommended to add guide hole before drilling. There is a slight difference in length between internal and external cooling. External: 3 3. 7 x6x34x72 3. 8 4. 7 x42x81 4. 8 6. 0 x6x57x95 6. 1 8. 0 x8x76x116 Two series of internal cold drilling: BK2055 and BB2055. Please note that there are two types of drill bits: internal cooling (with cooling holes) and external cooling (without cooling holes). Please be careful to select