Bosch HC4051 1" x 16" x 21" Spline SpeedX Rotary Hammer Bit Bosch HC4051 1″ x 16″ x 21″ Spline SpeedX Rotary Hammer Bit Spline shank rotary hammer bit with carbide tip SpeedX bits have increased flute geometry for faster dust removal and less vibration Fits Bosch as well as other spline hammers See also different: BOSCH 1-1/8″ x 16″ x 21″ Spline SpeedX Rotary Hammer Bit Bosch DSB1015 1-1/8″ DareDevil Spade Bit 1-1/8-Inch by 17-Inch Auger Bit << return to catalog