Product Description
Milwaukee 1/4 in. x 6 in. MX4 SDS+ Carbide Drill Bit
Model Number: 48-20-7331
The Milwaukee 48-20-7331 is a 1/4 in. diameter x 4 in. flute length x 6 in. overall length MX4 SDS+ Carbide Drill Bit — the individual unit purchasing format for Milwaukee's premium four-cutter MX4 bit at the compact 1/4 in. standard configuration. The MX4 four-cutter tip uses four active carbide cutting edges per revolution versus the standard two-cutter geometry of conventional SDS+ bits, delivering faster penetration rate and extended bit life from doubled carbide wear distribution in hard commercial concrete where the four-cutter advantage is most significant. The individual unit format is the right purchasing option for contractors who need a single MX4 replacement bit, are evaluating MX4 performance before committing to multi-pack quantities, or who drill 1/4 in. anchors occasionally rather than at production volume where bulk packs are more economical.
At 1/4 in. diameter, the MX4 four-cutter advantage in hard concrete delivers meaningful performance improvement over standard two-cutter bits — the four cutting contacts maintain more consistent penetration momentum through hard aggregate encounters that slow two-cutter bits more noticeably, and the doubled carbide wear distribution provides proportionally longer bit life in the hard high-strength concrete where small anchor installations are concentrated in commercial construction. The 6 in. overall length with 4 in. flute is the standard compact configuration suited to typical light-duty anchor embedment depths and ceiling penetrations, and the compact length provides the access advantages of a shorter bit for overhead and confined-space drilling positions. The SDS+ shank provides tool-free engagement in all SDS+ rotary hammers for fast bit changes.
Available in 15-pack (48-20-7931) and 25-pack bulk quantities for higher-volume purchasing — see Milwaukee's complete MX4 SDS+ lineup for all available pack formats at the 1/4 in. diameter.
Features
- MX4 four-cutter tip — faster speed and longer life vs. standard 2-cutter SDS+ bits
- Individual unit for single-bit replacement or MX4 performance evaluation
- 1/4 in. diameter for concrete screw anchors and light-duty expansion fasteners
- 6 in. overall length for standard anchor depths and overhead drilling positions
- SDS+ shank for tool-free engagement — bulk packs available for high-volume use
Specifications
- Diameter: 1/4 in.
- Flute Length: 4 in.
- Overall Length: 6 in.
- Tip: MX4 4-Cutter Carbide
- Shank: SDS+
Includes
- (1) Milwaukee 48-20-7331 1/4 in. x 6 in. MX4 SDS+ Carbide Drill Bit
