... concrete, brick and block. Fast cutting and long life. Dry Diamond Core Drill Kit in Aluminium Case, 3 Piece Kit or ... 7 Piece Kit. Contains:Diamond Core Drill Bit: Diam 28 x 300mm, Diam 52 x ... . Segments at 10.0mm, Semi-professional quality grade. Recomended to cut concrete, brick & block, general building materials.Adaptors & Accessories: SDS Plus ...