13 Pc Masonry drill bit set - Covers every common fixing size. Supplied in a strong plastic box. This set is ideal for field use. Features: 13 piece masonry drill bit set with tungsten tip. Good cutting speed and durability. Covers every common fixing size. Material: Brick, block, stone, light concrete. Contains: 13 - Masonry Drill Bits, Size:4, 5, 5.5(x3), 6(x2), 6.5(x2), 7(x2), 8(x2)mm. 1 - Plastic Case.