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Extensions for Core Drill Bits

Core drilling extension adapters made with industrial grade heat treated steel.

5/8"-11 male thread fits:

  • Dry core bits
  • Wet core bits 1-1/2" diameter and below

1-1/4"-7 male thread fits:

  • Wet core bits 1-3/4" diameter and above
When will my order arrive?
Expedited shipping available at checkout.
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Core Bit Threads Drill Arbor Price Quantity
info5/8"-11 Male 5/8"-11 Female - 6" Extension $29.31
info5/8"-11 Male 5/8"-11 Female - 12" Extension $42.99
info1-1/4"-7 Male 1-1/4"-7 Female - 6" Extension $39.99
info1-1/4"-7 Male 1-1/4"-7 Female - 12" Extension $45.99
info1-1/4"-7 Male 1-1/4"-7 Female - 18" Extension $99.99
info1-1/4"-7 Male 1-1/4"-7 Female - 24" Extension $159.99

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Local pick up only. Please call (626)-656-5982 to set up a local pick up.

An item over $1500 is required for financing.

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