Set includes: Cores: 42mm 52mm 65mm 117mm and 127mm Accessories: Chuck and SDS adaptors, chuck and SDS extensions, A-taper pilot drill, guide rod and drift key Suitable for use on: Standard Facing Bricks Light Density 3 to 7 Newton blocks Medium Density 7 to 12 Newton blocks Gritstone (occasional use) Limestone (occasional use) Sandstone Abrasive (occasional use) Ceramic Tiles (occasional use)