The Bosch HC2104 5/8-inch x 12-inch Carbide Tipped S4L SDS-Plus Bit uses a patent-pending 4-flute design which provides fast dust removal. The carbide-tipped head of the Bosch HC2104 is harder, tougher and more resistant to extreme binding. Features: * Optimized flute design to reduce stress allowing the bit to run cooler * Centric tip for optimal hole geometry What"s In The Box: * Bosch HC2104 5/8-inch x 12-inch Carbide Tipped S4L SDS-Plus Bit