Bosch SDS Plus-1 (4F) 6x50x110mm

The SDS plus-1 Drill Bit is optimized for drilling concrete. Its 2-cutter Tungsten Carbide plate makes the bit extra tough while its 4-flute U-shape flute design provides effective dust removal and standard lifetime. 

For additional resistance, indented cutting edges are
made from an ideal Bosch-controlled carbide blend. The bit is intended for work
on concrete and masonry.