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Core Drilling

Core bits, adapters, extensions and rigs for clean penetration work in reinforced concrete, block, and stone.

Empire M-1 core drill rig with Medusa wet core bits and a Shark Tooth core bit

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Core Drilling

Core Drilling Packages

Built for utility, plumbing, and structural penetration work. Call to spec diameter range and reinforcement level.

Starter

Small penetrations for plumbing, conduit and utility rough-in: wet Medusa bits 1-1/2" to 3-1/2", a dry bit and the adapters to run them.

6 parts · See what's inside

$575/ kit

$638.94 in parts Save $64

Pro Crew

Large-diameter openings in post-tension and heavy-rebar slabs: the Diamond Products Anchor rig with motor, wet Medusa bits 4" to 14" and a slurry ring.

8 parts · See what's inside

$6,123/ kit

$6,802.92 in parts Save $680

Shop Core Drilling

Real part numbers and current pricing. In-stock items ship same day when ordered by 2pm PST, free to the lower 48.

Core Bits
Zenesis black dry core bit Zenesis

Dry Core Bit

Zenesis Black Dry Core 1-3/8″

Granite · hard aggregate · dry cutting

ZDGUL035B4-DSO-GT
Zenesis Z Thin-Wall 1-3/8

Wet Core Bit

Zenesis Z Thin-Wall 1-3/8″

Copper Zenesis · brazed side protection

C-ZEN-1375-ZTW-DSO-GT
Zenesis Z-Thin Wall core bit

Wet Core Bit

Z-Thin Wall Core 1-1/2″

Thin kerf · faster penetration

C-ZEN-15-ZTW-DSO-GT
Zenesis 4 and 7 segment finger bits

Finger Bit

Zenesis Finger Bit 20mm

7 segment · 1-5/8″ · 1/2″ gas

C-ZFBS02040A7-DSO-GT
Adapters, Extensions & Rigs
Core Bit Adapter, 5/8

1-1/4 Thread

Core Bit Adapter, 5/8″-11 to 1-1/4″-7

Male to female · bit to drill

A-COR-5811-114-PT
Core Bit Extension, 1-1/4

1-1/4 Thread

Core Bit Extension, 1-1/4″-7 x 6″

Extend reach on wet core bits

A-COR-114-6-E-PT
SDS-Plus adapter for a 5/8 inch 11 threaded arbor

5/8-11 Male

SDS-Plus Adapter

Threaded arbor to SDS-Plus shank

A-SDS-5811-PT
5/8 inch 11 thread to SDS-Max shank adapter

5/8-11 Thread

SDS-Max Shank Adapter

Threaded arbor to SDS-Max

A-SDS-5811-MS-PT
Hilti Spline Adapter, 1-1/4

1-1/4 Thread

Hilti Spline Adapter, 1-1/4″ Thread

DD250 · DD160 · DCM1.5

A-HILT-114-SP-PT
M-1 core drill rig on its base with vacuum pump Quote

Diamond Products

M-1 Core Drill Rig

Core Bore motor · 3 speed · up to 14″

4245113-DP

Core Bits by Size

We stock 447 core bit part numbers. These are the sizes crews reorder most: call for anything from 1″ to 20″.

SizeBitThreadPart numberPrice
1-1/2″Medusa zig-zag · 10 bond · purple1-1/4 threadC-MED-15-125-114-ZZ-GT$70
1-3/4″Medusa zig-zag · 10 bond · purple1-1/4 threadC-MED-175-125-114-ZZ-GT$85
2″Medusa zig-zag · 10 bond · purple1-1/4 threadC-MED-2-155-114-ZZ-GT$110
2-3/4″Medusa zig-zag · 10 bond · purple1-1/4 threadC-MED-375-125-114-ZZ-GT$130
3-1/2″Medusa zig-zag · 10 bond · purple1-1/4 threadC-MED-35-155-114-ZZ-GT$175
1-1/2″10 bond pro prestress · 14″ tube1-1/4 threadC-10B-15-DSO-GT$65
1-1/4″Double point · W segment5/8-11 threadC-DOP-125-5811-SH$110
11″Fast cut double point · wet1-1/4 threadC-DOP-11-SH$770

Photography for the bit range is still being shot, so these are listed by spec rather than shown with a stand-in picture. Ask for a size that isn’t listed.

We stock 2,000+ products for core drilling

Sizes, bonds and arbors beyond the lineup above. Tell us the saw and the material, and we will spec it.

Tell Us the Diameter and Material. We’ll Spec the Rest.