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: 7/8 In. x 16 In. Rapidfeed Spade Bits LSB1011 Spade Bit Extension SBE1012 Bosch DSB1015 1-1/8″ DareDevil Spade Bit << return to catalog