Cle-Line C20912 Hammer Drill Bits; Drill Bit Size (Decimal Inch): 0.3100 ; Usable Length (Inch): 10.44; 10.44in ; Overall Length (Inch): 12; 12in ; Shank Type: Straight ; Number of Flutes: 2 ; Drill Bit Material: Carbide Tipped; High Speed Steel; Car