Milwaukee 48-20-4415 1x 1-1/2" X 17" X 22" 4-Cutter Spline Bit
The 48-20-4415 includes:
- 1x Milwaukee 48-20-4415 1-1/2'' X 17'' X 22'' Spline Shank Rotary Hammer Bit
- This is the most common shank
- New 4-Cutter Head design
- Centering point provides precise round holes
- Reduced vibration - New flute design
- New Brazing formula for up to 20% longer life
- (Diameter x Usable Length x Overall Length)
Milwaukee®'s 48-20-4415 Spline 4-Cutter Rotary Hammer Drill bits feature a 4-Cutter 4x90° tip geometry to avoid lock up in rebar, patented rebar chamfers for increased durability, and a high volume flute for fast debris removal. Used for drilling holes in brick, block, concrete, and reinforced concrete.
- Brand: Milwaukee
- Model: 48-20-4415
- MPN: 48-20-4415
- UPC: 045242103867
- Type: Spline Bit
- Cutter Geometry: 4-Cutter
- Diameter: 1-1/2"
- Length: 22"
- Useable Length: 17"
- Package Qty.: 1
Overall Rating for Milwaukee 48-20-4415 1x 1-1/2" X 17" X 22" 4-Cutter Spline Bit
Milwaukee Thunderbolt 1-1/2 bit
By BoB from Chicago Area on October 9, 2014
A friend allowed me use his drill, so I purchased this bit to do the job as opposed to renting a more powerful tool for $80/day.
Thunderbolt drilling takes twice as long as the rental unit, but for me, time is not a consideration.