Bosch Masonry Hammer Bits HC2302B25 SDS Plus 1/4 Inch Hex 25 Pack Bulldog Cutters (4 Head Tungsten Carbide Rebar Concrete CMU Screw Anchoring)

Bosch SDS-plus® Bulldog™ Hex Drive Rotary Hammer Drill Bits (25-Packs)

The Bosch SDS-plus® Bulldog™ Hex Drive rotary hammer drill bit 25-packs bore high-volume anchor pilot holes across reinforced poured concrete, CMU masonry block, and structural brick for fast concrete screw installation. Engineered with a built-in 1/4-inch hex shoulder on a heavy-duty SDS-plus® shank, each bit integrates directly with standard screw-anchor installation sleeves, enabling tradespeople to drill pilot holes and drive fasteners without swapping power tools or unchucking bits. Outfitted with premium wear-resistant tungsten carbide 4-cutter heads designed to slice through steel rebar without binding or shattering, optimized 4-flute spiral channels for rapid dust and debris extraction, and high-impact brazed alloy steel body construction, these commercial bulk packs equip electrical contractors, mechanical trades, and concrete framing crews with continuous, jam-free anchoring speed.

Best Used For:

• High-Volume Concrete Screw Fastener Installation: Boring pilot holes directly through metal conduit clips, steel track, and strut channels into concrete slabs using 1/4-inch hex drive installation sleeves.
• Rebar-Reinforced Commercial Concrete Drilling: Penetrating dense poured concrete footings, precast slabs, and structural pillars containing embedded rebar mesh without carbide head fracturing.
• CMU Block and Masonry Wall Anchoring: Drilling clean, non-spalling fastener penetrations across hollow cinder blocks, mortar joints, and brick facades for electrical boxes and piping mounts.

Key Performance & Safety Features

• Integrated 1/4-Inch Hex Shoulder: Seats directly into concrete screw installation sleeves for instant transition between drilling and fastener driving.
• Heavy-Duty 4-Cutter Carbide Head: Robust 4-cutter tungsten carbide tip geometry slices through rebar strikes and dense aggregate to prevent tip seizure.
• Optimized 4-Flute Debris Removal: Quadruple-flute spiral evacuates abrasive concrete dust rapidly from the bore path, lowering heat buildup and prolonging bit life.
• Centric Precision Centering Point: Conical guide tip ensures dead-on hole accuracy and eliminates bit walking on polished concrete slabs and slick surfaces.
• Extended Bulk Contractor Pack: 25-piece jobsite packaging ensures high-volume crews maintain constant tool availability on large commercial construction builds.
• High-Torque Brazed Alloy Construction: High-temperature copper-brazed head bonding resists severe percussive shock and high rotary torque loads.

What's Included

• (25) Bosch SDS-plus® Bulldog™ Hex Drive Rotary Hammer Drill Bits (User Selected Pack: HC2302B25, HC2312B25, or HC2031B25)

Technical Specifications

Pro-Tip: When installing concrete screws in floor slabs, blow pulverized dust out of the drilled hole using compressed air before sliding your driver sleeve over the hex shoulder; clean anchor channels prevent fastener binding and maximize anchor holding strength.