Family Designation: DDD-EF-FB
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Deep double tube drills with external 4-Start Thread Connection for high feed. Each item represents a diameter range. For a specific head diameter, an order form should be filled out.
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![](https://www.iscar.com/eCatalog/Ecat/illust_ISOm/3662.gif)
Representative Image
![](https://www.iscar.com/ecatalog/Ecat/datafile/PICTURE/3662.gif)
Representative Image
Item Designation: DDD-EF 51.71-56.20-FB
DCN ![Cutting diameter minimum](./media/icons/icon_info.svg) | DCX ![Cutting diameter maximum](./media/icons/icon_info.svg) | OAL | PL | DCONMS | DRVS ![Torque key size](./media/icons/icon_info.svg) | Ts ![Outer tube designation](./media/icons/icon_info.svg) | Tsi ![Inner tube designation](./media/icons/icon_info.svg) | ZEFF | NOF ![Number of flutes](./media/icons/icon_info.svg) | HAND | CSP ![0 - Without coolant supply, 1 - With coolant supply](./media/icons/icon_info.svg) | GICAT | GIREM | giic |
51.71 | 56.20 | 120.00 | 5.00 | 47.00 | 46.0 | TDO-I12 | TDI-N12 | 1~ | 2~ | R~ | 1~ | 4841161 | | 0 |
Items Per Package : 1