Milwaukee
Milwaukee Tool 4-1/2" Diamond Ultra Wet Core Bit
- SKU:
- MLW48-17-5045
- Availability:
- Usually Ships Same Day
- Weight:
- 7.06 LBS
Description

DUTY®
Diamond Ultra
Wet Core Bit
Core a 4-1/2 in opening in concrete and reinforced concrete with this wet-use diamond bit.
Product Overview
This 4-1/2 in Ultra diamond bit uses thin-kerf segments for wet coring in reinforced concrete.
Its 16 in drilling depth and 1-1/4-7 thread suit a matched setup; use the specified water feed.
- Thin-kerf segmentsDesigned for faster cuts.
- Diamond cuttingReinforced-concrete use.
- Wet operationWater-fed concrete coring.
- Core-drill useMX FUEL or corded drill.
Technical Specifications
- Diameter
- 4-1/2 in
- Drilling depth
- 16 in
- Connection thread
- 1-1/4-7
- Drilling mode
- Wet
- Cutting material
- Diamond
- Segment design
- Thin kerf
Choose the Correct Fit
Match the 4-1/2 in opening to the sleeve or service clearance required, then check the drill’s rated core capacity.
Confirm the 1-1/4-7 thread connection and the required working depth. Check the planned hole for concealed services and reinforcement.
Installation & Care
Isolate the drill before fitting or removing the bit. Follow the drill’s setup instructions and provide the specified water supply.
Allow the bit to cool before handling it. Clean out debris and inspect the cutting rim and threads before the next use.
Small Details. Big Jobsite Energy.
Get set. Stay focused. Make your next move count.
THE NEXT JOB.
Ask Willy:
Need help planning the core setup? Send Willy the required opening and depth, concrete type, drill model and spindle connection.
Important Product Questions
Can I use this bit for dry drilling?
No. This is a wet-use core bit. Follow the drill’s water-supply and collection requirements.
How do I connect it to my core drill?
This bit has a 1-1/4-7 thread. Confirm the matching spindle and the tool’s capacity for a 4-1/2 in core before fitting it.
Can I continue if the hole intersects reinforcement?
Stop and confirm that the hole location and any reinforcement cutting are permitted. A reinforced-concrete bit does not replace structural approval.