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579 4.37mm (11/64") HSS Aircraft Extension Drill by Guhring
| System of Measurement | Inch |
| Cutting Direction | Right Hand |
| Diameter | 4.37mm |
| Coolant Delivery | External |
| Point Angle | 135\u00b0 |
| Helix Type | Normal Helix |
| Type | Extension Drill |
| Number of Pieces | 1 |
| Finish/Coating | Nitride |
| Overall Length | 6in |
| Standards Met | NAS 907 |
| Drill Diameter | 4.37mm |
| Material | HSS |
| Series | 579 |
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