Product Description
Milwaukee 1 in. x 12 in. Diamond Core Bit Extension
Model Number: 48-17-4010
The Milwaukee 48-17-4010 is a 1 in. x 12 in. Diamond Core Bit Extension for use with the Milwaukee 48-17-3010 1 in. Diamond Premium Wet Core Bit — a 12 in. barrel extension that adds working depth to the 1 in. core bit for through-penetrations in wall and floor sections exceeding the standard barrel depth. This extension is specifically engineered for and sold as a companion accessory to the Milwaukee 1 in. Premium Wet Core Bit, providing the additional barrel depth needed to complete 1 in. core holes through thick concrete walls and slabs in commercial construction where the standard barrel's working depth is insufficient for a complete through-penetration from a single drill setup. Adding 12 in. of barrel extension to the 1 in. core bit enables drilling through walls and slabs with combined thickness that the base bit cannot penetrate from a single side, eliminating the need to access the opposite face for a second setup and the hole alignment challenges that two-sided drilling creates.
The extension maintains the 1 in. core bit's cutting diameter throughout the full extended depth — no reduction in hole size or change in cutting performance with the extension installed. Milwaukee precision-machines the extension's connection interface for concentric rotation of the core bit through the extension coupling without introducing runout that would degrade hole quality. The extension is used with wet cutting — water delivery through or alongside the bit and extension maintains diamond segment cooling and concrete slurry evacuation through the full extended barrel depth. Compatible with the Milwaukee 1 in. Premium Wet Core Bit (48-17-3010) and the standard core drill platforms and SDS+ adapter setups that run this bit size.
See Milwaukee's complete diamond core bit extension lineup for extensions matching other Milwaukee premium wet core bit diameters across the full core bit range.
Features
- 12 in. extension for through-penetrations beyond standard 1 in. core bit barrel depth
- Specifically designed for Milwaukee 1 in. Diamond Premium Wet Core Bit (48-17-3010)
- Maintains full 1 in. hole diameter through extended depth — no size reduction
- Precision-machined coupling for concentric core bit rotation through full extension
- Use with wet cutting for segment cooling and slurry evacuation at extended depth
Specifications
- Extension Length: 12 in.
- Core Bit Diameter: 1 in.
- Compatible Bit: Milwaukee 48-17-3010 1 in. Diamond Premium Wet Core Bit
Includes
- (1) Milwaukee 48-17-4010 1 in. x 12 in. Diamond Core Bit Extension
