Bosch HC8521 SDS-max Shank 1 Pc. Core Bit "The Wave" 2-5/8" x 7" x 12"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 HC8521 SDS-max Shank 1 Pc. Core Bit "The Wave" 2-5/8" x 7" x 12" Features:; Core bits go beyond the range of standard bits and allow smaller hammers to drill larger holes. Bosch SDS-max##reg## rotary hammer core bits are carbide tipped with an integral shank for better power transmission. Maximum core size is 4 deep.; SDS-max Rotary Hammer Core Bits ; Item # HC8521; Bit Diameter Inch 2-5/8 ; Useable Length 7 ; Overall Length 12