The Bosch HC4021 is a WildBore 5/8 inch x 11 inch x 16 inch Spline Shank Rotary Hammer Drill Bit. The bit carbide tipped and fit Bosch as well as other spline hammers.
5/8 inch x 11 inch x 16 inch Spline Shank Rotary Hammer Drill Bit
Drilling in concrete & masonry