Meet the Bosch SpeedX 3/4 in. x 21 in. SDS-Max Rotary Hammer Bit—the rugged, steel-bodied bit designed to conquer tough concrete and masonry with your SDS-Max hammer drill. With a long 21-inch overall length and a 16-inch flute, it’s built to deliver deep, efficient holes where you need them most, from reinforced concrete to brick and block structures.
Key specifications
- Material: Steel
- Shank type: SDS-Max Shank
- Drill Size: 3/4 in
- Flute Length: 16 in
- Overall Length: 21 in
- Number in Package: 1
- Packaging Type: Carded
- Style: SDS-max
Why this bit stands out
Designed for heavy-duty impact and reliable performance, the SpeedX line from Bosch focuses on efficient material removal and durable construction. The 3/4-inch diameter is a versatile choice for mid-to-large holes in concrete and masonry, while the SDS-Max shank ensures secure retention and smooth, rapid bit changes in compatible rotary hammers. The generous flute length enables deeper holes without sacrificing rigidity, making it ideal for anchor installations, conduit runs, and heavy masonry work.
Ideal use cases
- Drilling through concrete slabs, foundations, and walls for anchors, bolts, and electrical runs
- Creating openings in reinforced concrete for pipes, conduits, or plumbing lines
- Large-diameter bore holes in masonry for fast, reliable progress on professional projects
Who should use it
Professional tradespeople—including masons, electricians, plumbers, and general contractors—will find this bit indispensable for high-volume, demanding drilling tasks. DIY enthusiasts tackling substantial concrete projects will also benefit from its robust steel construction and compatible SDS-Max shank.
Practical tips for best results
- Use in hammer drill mode with steady, gradual pressure to maintain a straight bore and prevent wandering.
- Keep the bit cool by avoiding prolonged continuous drilling; withdraw periodically to clear chips and reduce heat buildup.
- Ensure your drill is configured for SDS-Max operation and use proper PPE—eye protection, hearing protection, and gloves.
- Start with a pilot mark to guide the bit, then proceed to the full 3/4 inch diameter for clean, accurate holes.
With the Bosch SpeedX 3/4 in. x 21 in. SDS-Max Rotary Hammer Bit, you get a purpose-built tool that tackles concrete and masonry projects with confidence, delivering dependable performance and lasting durability in every cut.
