Description SDS Plus 2 Cutter Drill Bits have a strong tapered core to help resist flute breaks, especially when drilling deep holes. For optimal drilling speeds, the two-stage flute design features a variable helix pattern that quickly moves debris away from the contact zone. Plus, the two sharp, carbide-cutting edges deliver clean, round holes for secure anchor installation. These bits are made in Germany and are GUARANTEED TOUGH - so tough that we are offering a NO BREAK GUARANTEE. If you have our bits, we have your back.Strong core: Tapered core for bit strength and maximum durability, especially when drilling deep holesAggressive material removal: Two stage flute design with variable helix pattern allows for efficient debris removalClean, round holes: Two sharp cutting edges for true holesWear mark indicator: For accurate diameter of holesNO BREAK GUARANTEE: If your bit fails for any reason while the wear mark is still visible, we'll replace it (excludes: DW5400, DW5401, DW5401B25)DEWALT carbide tip design maximizes carbide surface contact for longer bit lifeUsed by glaziers for spike anchors to hold window and door frames WARNING: This product can expose you to chemicals including Lead which is known to the State of California to cause cancer, birth defects or reproductive harm and Butyl Benzyl phthalate (BBP) which is known to the State of California to cause birth defects or other reproductive harm. For more information go to www.P65Warnings.ca.gov