Bosch HC4031 3/4-Inch x 8-Inch x 13-Inch Wild Bore Spline Rotary Hammer Bit
The Bosch 3/4-inch by 11-inch by 16-inch spline shank bit is for use with large rotary hammers with a spline drive style and is designed to break through concrete material quickly and remove large chips. The carbide X-head is more efficient at cutting through some types of rebar.