CK Tools 597389 Masonry Drill Bit 4x75mm - CK Tools T3110A 06100, Masonry Drill Bit 6x100mm - CK Tools T3110A 06100 Masonry Drill Bit is designed for efficient drilling in various masonry materials, including brick, concrete, and stone. CK Tools T3110A 06100 Masonry Drill Bit 6x100mm