Dewalt DW5812 .75" x 16" x 21.5" High Impact 4 Cutter SDS Max with up to twice the life of BOSCH®* you can drill through reinforced concrete and withstand rebar strikes. The complete range of these bits are made in Germany with global materials and are ideal for rebar doweling. The patented unique carbide 4 cutter edge design increases the drill bit durability, while the IRON BLAST TECHNOLOGY™ process strengthens the bit and resists fatigue resulting in extreme durability. The bits are GUARANTEED TOUGH® - so tough that we are offering a NO BREAK GUARANTEE** If you have our bits, we have your back.