DEWALT SDS Plus XLR Full Head Carbide Drill Bits have a solid carbide tip which offers users the highest performance in the toughest applications. The 4-cutter geometry provides clean holes, high drilling speed and reduces the chance of jamming of the drill in reinforced concrete. Made from a superior hard metal alloy with an increased drill core structure for greater resistance to fracture. Optimised flute design allows for efficient debris removal. Ref: UTTK7220