Core Center Bit: 2 in Core Dia, 2 Decimal Equivalent, 17 in Max Drilling Dp, 22 in Overall Lg

These one-piece core bits have a spline shank that prevents the bits from slipping in high-torque drilling applications when creating large, shallow holes in concrete, masonry, and limestone. The bits install into compatible rotary hammer drills with spline-drive chucks, which have 12 grooves that mesh with grooves on the bits' shanks to hold them in place in the chucks. The bits are secured with a retaining pin.