Your trusted source for high-performance drill bits, fast shipping, and unbeatable value.
Trusted for over 30 years.
Free Quotes! (877) 704-2487

Drill Bits for Wood, Metal, Concrete & Beyond

  • My Account
  • Contact Us
  • Blog
  • Cart
  • Request Your Free Drill Bit Quote
  • Log In
drillbitsworld.com
Search

Talk to an expert!

(877) 704-2487

  • Shop All Drill Bits
    • 3/8″ Shank Metal Working Drills
      • Cobalt 135 Degree Notched Point
      • Parabolic Flute High Speed Steel 135 Degree Split Point
      • TiN Coated 135 Degree Split Point
    • Annular Cutters
      • Carbide Tipped
      • Cobalt
      • High Speed Steel
      • TiN Coated
    • Auger & Wood Drill Bits
      • Augers
      • Brad Point Bits
      • Spade Bits
    • Bellhangers
      • Carbide Tipped
      • FlexiBit Flexible Shank
      • Stiff Shank
      • Thread Flute
    • Carbide Tipped Drills
      • Carbide Tipped Core Drills
      • Carbide Tipped Die Drills
      • Carbide Tipped Glass & Tile Drills
      • Carbide Tipped Screw Machine Length Drills
      • Jobber Drills
      • Straight Flute for Hardened Steel Drills
      • Taper Length
      • Taper Shank Drills
    • Diamond Drill Bits
      • Boring Drills for Hard Tiles & Ceramics
      • Segmented Core Dry Cutting Drills
      • Segmented Core Wet Cutting Drills
      • Thin Wall Marble & Granite Drills
    • Extra Long Drill Bits
      • 6″ Overall Length
      • 8″ Overall Length
      • 9″ Overall Length
      • 10″ Overall Length
      • 12″ Overall Length
      • 15″ Overall Length
      • 18″ Overall Length
      • 24″ Overall Length
      • 36″ Overall Length
      • 48″ Overall Length
      • 60″ Overall Length
      • 72″ Overall Length
    • Masonry Drill Bits
      • Bits for Stanley Hydraulic HD-45 & Skil 736
      • Core Drills
      • Drill Bits with Flats on Shank
      • Glass & Tile Drill Bits
      • Granite Drill Bits
      • Hammer Drills
      • Rebar & Plate Cutters
      • SDS-Max Shank
      • SDS-Plus Shank
      • SDS Plus Drill Bits with Hex
      • Spline Shank
    • Solid Carbide Drills
      • 3-Flute Solid Carbide Drills
      • Jobber Drill Bits
      • Screw Machine Length Drill Bits
      • Spade Bits | Solid Carbide
      • Standard Length Drill Bits
      • Straight Flute
    • Reamers
      • Bridge Reamers
      • NITRO Construction Reamers
      • Safety First Construction Reamers
    • Reduced Shank Drills
      • Cobalt
      • High Speed Steel
    • Silver & Deming Drills
      • High Speed Steel
    • Skin Packaged Drills
      • Black & Gold
      • Cyclo-Impact
      • Cyclo-Twist
      • Duo-Bit
    • Taper Drill Bits
      • Taper Shank Drill Bits
    • Drill Bit Sets
      • Cobalt
      • High Speed Steel
    • Glass & Tile Drill Bits
    • Holesaws
    • Praxis Extensions
      • Praxis Extension Drill Bits
      • Praxis Drill Bit Extension Shanks
  • Contact Us
  • Custom Drill Bits
  • Decimal Chart
  • Drill Bit FAQ’s
  • My Account
  • Checkout
0Cart 0
Search
  • Shop All Drill Bits
    • 3/8″ Shank Metal Working Drills
      • Cobalt 135 Degree Notched Point
      • Parabolic Flute High Speed Steel 135 Degree Split Point
      • TiN Coated 135 Degree Split Point
    • Annular Cutters
      • Carbide Tipped
      • Cobalt
      • High Speed Steel
      • TiN Coated
    • Auger & Wood Drill Bits
      • Augers
      • Brad Point Bits
      • Spade Bits
    • Bellhangers
      • Carbide Tipped
      • FlexiBit Flexible Shank
      • Stiff Shank
      • Thread Flute
    • Carbide Tipped Drills
      • Carbide Tipped Core Drills
      • Carbide Tipped Die Drills
      • Carbide Tipped Glass & Tile Drills
      • Carbide Tipped Screw Machine Length Drills
      • Jobber Drills
      • Straight Flute for Hardened Steel Drills
      • Taper Length
      • Taper Shank Drills
    • Diamond Drill Bits
      • Boring Drills for Hard Tiles & Ceramics
      • Segmented Core Dry Cutting Drills
      • Segmented Core Wet Cutting Drills
      • Thin Wall Marble & Granite Drills
    • Extra Long Drill Bits
      • 6″ Overall Length
      • 8″ Overall Length
      • 9″ Overall Length
      • 10″ Overall Length
      • 12″ Overall Length
      • 15″ Overall Length
      • 18″ Overall Length
      • 24″ Overall Length
      • 36″ Overall Length
      • 48″ Overall Length
      • 60″ Overall Length
      • 72″ Overall Length
    • Masonry Drill Bits
      • Bits for Stanley Hydraulic HD-45 & Skil 736
      • Core Drills
      • Drill Bits with Flats on Shank
      • Glass & Tile Drill Bits
      • Granite Drill Bits
      • Hammer Drills
      • Rebar & Plate Cutters
      • SDS-Max Shank
      • SDS-Plus Shank
      • SDS Plus Drill Bits with Hex
      • Spline Shank
    • Solid Carbide Drills
      • 3-Flute Solid Carbide Drills
      • Jobber Drill Bits
      • Screw Machine Length Drill Bits
      • Spade Bits | Solid Carbide
      • Standard Length Drill Bits
      • Straight Flute
    • Reamers
      • Bridge Reamers
      • NITRO Construction Reamers
      • Safety First Construction Reamers
    • Reduced Shank Drills
      • Cobalt
      • High Speed Steel
    • Silver & Deming Drills
      • High Speed Steel
    • Skin Packaged Drills
      • Black & Gold
      • Cyclo-Impact
      • Cyclo-Twist
      • Duo-Bit
    • Taper Drill Bits
      • Taper Shank Drill Bits
    • Drill Bit Sets
      • Cobalt
      • High Speed Steel
    • Glass & Tile Drill Bits
    • Holesaws
    • Praxis Extensions
      • Praxis Extension Drill Bits
      • Praxis Drill Bit Extension Shanks
  • Contact Us
  • Custom Drill Bits
  • Decimal Chart
  • Drill Bit FAQ’s
  • My Account
  • Checkout
  • My Account
  • Contact Us
  • Blog
  • Cart
  • Request Your Free Drill Bit Quote
  • Log In
  • Shopping Cart
  • Checkout
  • Order Complete

Cart

admin2025-08-12T11:39:36+00:00
Continue shopping “Core Bit Extension – 6″ Long, 1-1/4″ – 7 Thread” has been added to your cart.
Remove item Thumbnail image Product Price Quantity Subtotal
× Annular Cutter - High Speed Steel - 4" Depth of Cut 1-11/16" Diameter - Annular Cutter - High Speed Steel - 4" Depth of Cut $914.24
$914.24
× Diamond Core Bit Extension Core Bit Extension - 6" Long, 1-1/4" - 7 Thread $203.54
$203.54

Cart totals

Subtotal $1,117.78
Shipping
Total $1,117.78
Proceed to checkout
Trusted For Over 30 Years

CONTACT INFO

ADDRESS:
Orlando, Florida, USA
PHONE:
(877) 704-2487
EMAIL:
contact@drillbitsworld.com
WORKING DAYS/HOURS:
Mon - Fri / 9:00 AM - 5:00 PM

CUSTOMER SERVICE

  • About us
  • Contact us
  • My Account
  • Order history
  • FAQ's
  • Custom Drill Bits
  • Refund & Return Policy

ABOUT US

  • ✔ Drill Bits Engineered for Every Material
  • ✔ Custom and Hard-to-Find Sizes Available
  • ✔ Precision, Strength, and Fast Delivery
  • ✔ Trusted by Pros for Over 30 Years
  • ✔ Serving Contractors, DIYers & Industry Pros

    © Preferred Industrial Products, DBA Drill Bits World. All rights reserved.