STM 4″ Diameter Precision Boring Head, 356003
- Body Diameter (Inch): 4
- Boring Bar Hole Diameter (Inch): 1
- Perfect for mill or jig bore operation
- These heads readily adapt to many different machines due to interalterable shanks
- 1-1/2″-18 threaded mount
Technical specs
- Offset (Inch): 1″





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