The Bosch 1/4 In. x 2 In. x 4 In. SDS-plus® Bulldog™ Xtreme Carbide Rotary Hammer Drill Bits. The Bosch SDS-plus® Bulldog™ Xtreme Rotary Hammer Bit provides 4X life in concrete with rebar, due to its 100% full-carbide tip design and proprietary diffusion-bonding technology. Diffusion bonding’s high-heat, high-pressure solid-state welding produces an incredibly strong bond. In internal tests, these bits delivered 4X life in concrete with rebar than a standard SDS-plus® bit. The Bulldog™ Xtreme bit provides 25% more holes per charge, with an upgraded variable flute design – four flutes transition to two flutes for fast dust removal. Its centric conical tip results in rounder holes for precision anchoring, and it has a wear mark that helps to assure accuracy of the hole.

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• Diffusion bonding technology – provides stronger carbide bond for a durable, longest-lasting bit
• 100% full-carbide head – delivers 4X life in concrete with rebar and longer life in all masonry drilling
• Variable flute design – supplies efficient material removal for 25% more holes per charge
• Centric conical tip – results in rounder holes for precision-anchoring applications
• Wear mark – assures hole-diameter tolerance for anchoring
• Widest range – the Bulldog™ Xtreme line offers the widest range of full-head carbide bits
• Optimized for heavy-duty and cordless rotary hammers – fits tools with SDS-plus® chucks

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This Product Comes With

• (25) 1/4 In. x 2 In. x 4 In. SDS-plus® Bulldog™ Xtreme Carbide Rotary Hammer Drill Bits