DRY CORE BIT 2 1/2 X .125 X 5/8-11 ; X301 ZZ TURBO masonry ; PREMIUM BIT 7mm (.276") segment height ; ZZ turbo segments, spiral barrel for faster drilling ; For masonry applications ; Not for reinforced concrete ; 10" barrel length ; New barrel design for Dust Free ; Application(s): Masonry, Brick, Concrete Block