Masonry & Concrete Drilling

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  1. 1/2" Hex Shank to 5/8''-11 (M) Adapter

      Converts the 5/8"-11 (M) thread for use in a normal 1/2" tri-hex shank on electric hand drill.

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  2. 3/8" Hex Shank to 5/8''-11 (M) Adapter

    3/8" Hex Shank to 5/8''-11 (M) Adapter

    $14.49

    $12.49

      Converts the 5/8"-11 (M) thread for use in a normal 3/8" tri-hex shank on electric hand drill.

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  3. 1/2'' Shank TO 1-1/4''-7 (M) Adapter

    1/2'' Shank TO 1-1/4''-7 (M) Adapter

    $33.99

    $31.49

    Adapter: 1-1/4"-7 (male) to 1/2" shank

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  4. 1-1/4''-7 (M) to 5/8''-11 (FM) Adapter

    1-1/4''-7 (M) to 5/8''-11 (FM) Adapter

    $30.99

    $28.49

    • Adapter: 1-1/4"-7 (male) to 5/8"-11 (female) big head
    • This adapter works great for using larger diameter core bits threaded at 1-1/4"-7 on a grinder threaded at 5/8"-11. This adapter is usually required when using 6" to 14" in diameter wet core bits that have the 1-1/4"-7 female threaded.
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  5. 1-1/4''-7 (M) to 5/8''-11 (FM) Adapter

    1-1/4''-7 (M) to 5/8''-11 (FM) Adapter

    $48.99

    $26.49

    • Adapter: 1-1/4"-7 (male) to 5/8"-11 (female) small head.
    • This adapter works great for using larger diameter core bits threaded at 1-1/4"-7 on a grinder threaded at 5/8"-11. This adapter is usually required when using 2" to 5" in diameter wet core bits that have the 1-1/4"-7 female threaded.
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  6. 5/8''-11(M) to 1-1/4''-7(FM) Adapter

    5/8''-11(M) to 1-1/4''-7(FM) Adapter

    $37.99

    $35.49

    • Adapter: 5/8"-11(male) to 1-1/4"-7(female)
    • This adapter works great for using smaller diameter core bits threaded at 5/8"-11 on a core drill machine threaded at 1-1/4"-7. This adapter is usually required when using under 2" in diameter wet core bits or all the size of the dry core bits that have the 5/8"-11 female threaded.
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  7. 1-1/4''-7 Extension Shafts(6 Inch Length)
    Extension Shaft: 1-1/4"-7(male) to 1-1/4"-7(female)
    Size Available: 6"
    This extension shaft is for core drill machines and core bits threaded with 1-1/4"-7
    Cannot be used with core bits under 1"
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  8. 5/8''-11 Extension Shaft (6" Length)

    5/8''-11 Extension Shaft (6" Length)

    $32.99

    $29.99

    • Extension Shaft: 5/8"-11(male) to 5/8"-11(female)
    • Size Available: 6"
    • This extension shaft is for core drill machines and dry core bits threaded with 5/8"-11
    • Can only be used with corebits 1-1/8-inch and above
    • Cannot be used with core bits under 1"
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  9. 1-1/4''-7 Extension Shafts(12 Inch Length)
    Extension Shaft: 1-1/4"-7(male) to 1-1/4"-7(female)
    Size Available: 12"
    This extension shaft is for core drill machines and core bits threaded with 1-1/4"-7
    Cannot be used with core bits under 1"
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  10. 5/8''-11 Extension Shaft (12" Length)

    5/8''-11 Extension Shaft (12" Length)

    $42.99

    $39.99

    • Extension Shaft: 5/8"-11(male) to 5/8"-11(female) 
    • Size Available: 12"
    • This extension shaft is for core drill machines and dry core bits threaded with 5/8"-11
    • Can only be used with corebits 1-1/8-inch and above
    • Cannot be used with core bits under 1"
    Learn More