Family Designation: DDC-EC
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Double Tube Counterboring Drills with Outer 4-Start Thread Connection, Cartridges and Adjustable Diameter (40-184mm dia.).
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![](https://www.iscar.com/eCatalog/Ecat/illust_ISOm/4697.gif)
Representative Image
![](https://www.iscar.com/ecatalog/Ecat/datafile/PICTURE/4697.gif)
Representative Image
Item Designation: DDC-EC 51.71-56.20
DCN ![Cutting diameter minimum](./media/icons/icon_info.svg) | DCX ![Cutting diameter maximum](./media/icons/icon_info.svg) | DRVS ![Wrench size](./media/icons/icon_info.svg) | LF | OAL | DCONMS | CSP ![0 - Without coolant supply, 1 - With coolant supply](./media/icons/icon_info.svg) | ZEFF | NOF ![Number of flutes](./media/icons/icon_info.svg) | HAND | W1 | APMX | APMX_2 | GICAT | GIREM | giic |
51.71 | 56.20 | 53.0 | 100.00 | ~ | 47.00 | 1~ | 1~ | 1~ | R~ | ~ | 6.40 | 4.00 | 4841324 | | 0 |
Items Per Package : 1