Bosch 5/16" x 4" x 6" SDS-plus Xtreme Carbide Rotary Hammer Drill Bit is designed to deliver exceptional performance and durability for heavy-duty masonry drilling. Featuring a full-carbide head, this bit four times the life in concrete with rebar and extended durability across all masonry applications. Its advanced diffusion bonding technology, which uses high heat, high pressure, and solid-state welding, ensures an exceptionally strong bond for long-lasting use. The upgraded variable flute design allows for 25% more holes per charge, while the centric conical tip creates rounder holes for precise anchoring. Optimized for both heavy-duty and cordless SDS-plus rotary hammers, this bit also includes wear mark alerts to help users identify when the tip has worn beyond ANSI specifications, ensuring reliable performance every time. Model Number: HCFC2051