BBosch HC2001B10 532-Inch by 4-Inch by 6-Inch Bulldog SDS-Plus Shank Bit 2 CT, 10-Pack ReviewbP PP Bosch HC2001B10 532-Inch by 4-Inch by 6-Inch Bulldog SDS-Plus Shank Bit 2 CT, 10-Pack P15-percent faster in concrete (compared to S4L)POptimized brazing and hardening process for long lifePOptimized flute design to reduce bit stress and make the bit run coolerPCarbide tipped bit head is harder, tougher, and more resistant to extreme loadsPCentric tip for optimal hole geometryP