This Diamond Core Drill Bit has 1 1/4 - 7 UNC Thread
for professional Core Drilling Machines

5" x 15" (127x400)   x 1 1/4" -7 UNC Thread

Sintered Diamond Core Bits are also known as Diamond Hole Saws.

These are professional quality, heavy-duty diamond drill bits designed for use on Cement Block, Concrete, Brick and much more. 

Sintered diamond drill bits have the diamonds embedded into the metal of the Hole Saw teeth or continuous edge rather than merely "bonded" to the outside / tip.

As the teeth wear down over continued use new diamonds come to the surface of the teeth.

Sintered diamond drill bits are heavy duty bits designed for long life. Generally, sintered bits will have a long life of 20 to 30 or more times the life of a bonded Grit type diamond drill bit if used properly. The heavy-duty design provides long life when drilling in hard materials such as Brick and Concrete. Water is recommended for coolant and lubrication. 

Package Contents

This listing includes the following:

5" (127mm) x 15" (400mm) x 1 1/4-7 Thread

Sintered Diamond Core Drill Bit

Another Amazing Product

We have been Manufacturing Tools for over 40 Years in UK. USA Based Seller


So What Else 
Might You Need?

If you have a Tile Project to do check out 
our other kits that include the Amazing Tile
& Glass Cutter plus other items like Drill 
Bits for mounting grab bars and towel
 rails, Hole Saws for Faucets and Shower
 Head. Larger Hole Saws for Drains, 
Even 7 1/4" for the Toilet Flange
Large Core Bits for Dryer Vents.



What Else
Do We Sell?
Tons,Keep Scrolling!


Some with Drill Bits, Saw Blades, Grinders
Some with Files,Jigsaws and Holesaws


For Mounting Grab Bars, Toilet Roll 
Holders, Towel Rails.
Tungsten for Wall Tile Marble & Slate.
Diamond for Porcelain, Floor Tile,
Granite Stone and Rock.


Cuts through Hardened Steel, Seized Padlocks
Hardie Siding and Backer Board, Cement Block
Cast Iron, Check out Listings for full list.



Cuts through Plaster, Drywall, Hardie Board
Cement Backer Board, Fiberglass
Laminate Flooring. 
Check out Listings for full list.



Cuts through Plaster, Drywall, Hardie Board
Cement Backer Board, FiberGlass
Laminate Flooring. 
Check out Listings for full list.



Cuts through Concrete, Brick Masonry,
Stucco, Plaster, Drywall, Hardie Board
Cement Backer Board, FiberGlass
Laminate Flooring. Low Density Ceramic Tile
Check out Listings for full list.


Designed for Our Tungsten Hole Saws
as the Adapter Pilot Drills are TCT -
Tungsten Carbide Tipped for Masonry
but will fit any other hole saws


These Diamond Grit Edge Hole Saws are our
Pro Range with Larger Diamonds than what
you would find in box stores and you will
get many holes if kept cool.


Diamond Hole Saws with no Pilot Drills
can be a little tricky to start but our Diamond 
Hole Saw and Core Bit Guides make it simple.



A range of Kits that offer better value
Than Purchasing individual items.
Some Kits come in there own cases



Cut Deep Holes through Concrete
Brick Masonry, available with adapters.
Large 1 1/4" Bore Also available for Machines


Core Bits have 5/8-11 UNC thread 
which allows them to screw straight
onto a regular Angle Grinder Thread