Product Description Bosch HC5091 SDS-max Shank Bit (CT) 1-1/2' x 16' x 21' Wild Bore Head Bosch Power Tools and Accessories is one of the divisions within the Robert Bosch Tool Corporation, which is one of the largest power tool and accessory manufacturers in the world. Bosch provides a complete line of corded and cordless power tools and accessories engineered to survive any jobsite and allow professionals to take control of their work. Bosch HC5091 SDS-max Shank Bit (CT) 1-1/2' x 16' x 21' Wild Bore Head Features: SDS-max WildBore Rotary Hammer Bits with Quadro-X Design feature a patented extra strength tip for longer life and faster drilling. 4-cutter head provides fast, accurate drilling and true round holes for anchors SDS-max WildBore Rotary Hammer Bits with Quadro-X Design Item # HC5091 Diameter 1-1/2' Useable Length 16' Overall Length 21' Amazon.com The Bosch 1-1/2-inch by 18-inch by 23-inch carbide spiral SDS-Max rotary hammer drill bit features a carbide tip to provide durability. The reduced-vibration design enables easy drilling and the 4 cutting edges offer versatility. Bosch brings constant innovation to concrete and masonry drilling. From inventing the industry standard SDS system to custom-manufactured carbide and diffusion bonding, the result is better performance and durability.