Bosch HC8555 4" x 22" SDS-max Rotary Hammer Core Bit
•Wave design transfers energy to bit more effectively allows up to 40 percent faster drilling versus previous design
•Carbide-tipped centering bit
•Asymmetrical carbide teeth for faster cutting, longer life
•All-in-one core transmits power directly all the way to the end of the bit
•Maximum core size is 2-5/8" deep
Useable Length 17"
Note Drill bits (or extension + drill bit) in excess of 8" should never exceed 600 RPM