Active Centering Drill Bit Bosch HC4051 1 In. X 21 In. Spline Speed-X Rotary Reinforced Concrete Drilling Tungsten-carbide tip provides superior wear resistance in tough applications The Bosch Speed-X rotary hammer bit is easy to use. This part has a 1 in diameter. This rotary hammer bit is made of carbide tipped with a finish Active-centering tip for optimum guidance when drilling in concrete and reinforced concrete Bosch 1 Inch X 21 Inch Spline Speed-X™ Rotary Hammer Bit ^ Tungsten-Carbide Tip Provides Superior Wear Resistance In Tough Applications ^ Active-Centering Tip For Optimum Guidance When Drilling In Concrete And Reinforced Concrete ^ Large Flute Volume For Fast Drilling, Dust Transport And Less Clogging ^ Narrow Flute Back For Reduced Friction... Includes 1 x 18 Spline Rotary Hammer Bits - HC4051 BOSCH Rotary Hammer Drill: 1 in Drill Bit Size, 16 in Max Drilling Dp Inclined side cutters for aggressive drilling
