Product Description
Milwaukee SDS+ Bit 1/4 in. x 4 in. x 6 in. — 25 Pack
Model Number: 48-20-7531
The Milwaukee 48-20-7531 is a 25-pack of 44 Magnum Series SDS+ rotary hammer drill bits in 1/4 in. diameter with a 4 in. working length and 6 in. overall length — the bulk-quantity format for high-volume small-diameter anchor drilling where consistent production performance and economical per-bit cost are essential. Milwaukee's 44 Magnum series features carbide tips vacuum-brazed to heat-treated steel shanks with dual cutting edges and optimized helical flute geometry, maintaining predictable drilling speed and bit behavior from the first bit to the last across all 25 in the pack. The 1/4 in. diameter is the standard pilot hole size for small concrete screw anchors, light-duty expansion fasteners, and specialty concrete fastening systems used throughout commercial and residential construction for conduit support, equipment anchoring, sign mounting, and general concrete fastener installations.
The compact 6 in. overall length is well-suited to overhead ceiling anchor installations, horizontal drilling near corners and obstructions, and any confined-space application where shorter bit length enables easier drill positioning and control. In bulk pricing, the 25-pack per-bit cost drops significantly compared to individual or 5-pack purchasing, making it the standard procurement format for commercial electrical contractors, mechanical contractors, and construction crews who install large quantities of 1/4 in. anchors per project. The SDS+ shank provides tool-free engagement in all SDS+ rotary hammers for continuous fast bit changes during production drilling runs.
Individual single-bit packaging is available as 48-20-7430 for contractors who need a single replacement — the 25-pack is the economical choice for high-volume production use.
Features
- 25-pack 44 Magnum series for consistent production performance across all 25 bits
- Carbide tip vacuum-brazed to heat-treated steel shank for reliable anchor drilling
- 1/4 in. diameter for small concrete screw anchors and light-duty expansion fasteners
- Compact 6 in. overall length for overhead and confined-space anchor installations
- SDS+ shank for tool-free engagement on all SDS+ rotary hammers
Specifications
- Diameter: 1/4 in.
- Working Length: 4 in.
- Overall Length: 6 in.
- Shank: SDS+
- Quantity: 25 Pack
Includes
- (25) Milwaukee 48-20-7531 SDS+ Bits 1/4 in. x 4 in. x 6 in.
