Features and Benefits:•5/8 in. diameter, 4-cutter head•Drilling depth 31 in.•Overall length 36 in.•Spline shankMilwaukee®’s spline 4-cutter rotary hammer drill bits feature a 4-cutter 4 x 90° tip geometry to avoid lock up in rebar, patented rebar chamfers for increased durability, and a high volume flute for fast debris removal. Used for drilling holes in brick, block, concrete, and reinforced concrete.