12 Inch Core Bit Extension 1-1/4"-7mm (Male) to 1-1/4"-7mm (Female) shaft is shaft is for use on core drill machines and dry core bits with 1-1/4"-7 threaded. Easily to extend the drilling depth to 12" deep.

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12 Inch Core Bit Extension 1-1/4"-7mm (Male) to 1-1/4"-7mm (Female) shaft is shaft is for use on core drill machines and dry core bits with 1-1/4"-7 threaded. Easily to extend the drilling depth to 12" deep.

  • Shaft Size 12 Inch Thread 1-1/4"-7mm
  • 1-1/4"-7 male thread to 1-1/4"-7 female thread
  • We have other extensions available
  • The shaft is hollow to allow water flow during wet applications

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