The Bosch Bulldog 1/4 in. x 18 in. L Steel SDS-Plus Rotary Hammer Bit with SDS-Plus Shank is engineered for serious concrete work where depth and durability matter. Built from solid steel, this long-reach bit is designed to withstand the hardest masonry tasks while delivering steady, precise holes when you need them most.
Key features that set it apart
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Long, deep drilling capability: 18 in overall length with a 16 in flute length enables reach for deep-set anchors, through-wall installations, and applications where shorter bits fall short.
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Sturdy steel construction: A tough steel body provides dependable performance under repeated hammering in concrete, brick, and block.
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SDS-Plus shank: Compatible with a wide range of SDS-Plus hammer drills for secure bit retention, efficient energy transfer, and reduced bit wandering during impact.
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1/4 in. drill size: Ideal for small-diameter pilot and anchor holes, precision work, and threaded-fastener installations in masonry.
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Brand heritage: Bosch Bulldog designation signals proven reliability and professional-grade performance trusted by contractors and tradespeople.
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Carded packaging, single count: Ready to display and easy to stock for job-site needs.
Ideal use cases
- Deep masonry holes for anchor and fastener installations in concrete walls and floors.
- Electrical and plumbing runs where access requires extended bit length.
- Chip-free, clean starts in reinforced masonry thanks to robust steel construction and SDS-Plus engagement.
Why this bit should be in your toolkit
When you need reliable, long-reach performance in concrete, the Bosch Bulldog SDS-Plus bit blends a durable steel body with an SDS-Plus shank for dependable tool compatibility and reduced bit walk. Its extended flute length aids chip evacuation, helping maintain fast penetration and consistent hole size even as you drill deeper. This is a purpose-built solution for professionals who routinely tackle masonry projects that require precision, strength, and endurance from a single, trusted bit.
Practical tips for best results
- Use in hammer mode with a compatible SDS-Plus rotary hammer for optimal impact energy transfer.
- Drill in controlled bursts to manage heat buildup; allow brief cooling pauses to prolong bit life.
- Keep holes clean of dust and debris to maintain accuracy and reduce bit binding.
- Match bit selection to the task—reserve the 1/4 in. diameter for small-diameter anchors and precise pilot holes in masonry.
