Disclaimer: Pictures Showed are only for ReferenceB+Btec 1-1/4 in. x 13 in. Dry-Speed Diamond Segmented Core Drill Rig Bit is for dry use in brick, masonry, calcium silicate and more. B+BTec has developed a new advanced sintering technology called SinTec. The combination of SinTec technology, the development of special bonds and the use of top quality diamond crystals has resulted in a unique range of High Speed Diamond Core Bits that guarantee an unparalleled drilling speed and long tool life in a wide range of materials.Features High Speed Dry Drilling 9 mm diamond height Cuts brick, masonry, calcium silicate and more 1-1/4in. - 7 Threaded Arbor Silica dust free Dry use Specifications Part Number 2.000.549 Head Type Segmented Suitable Machine Core Drill Rig Material Diamond on Steel Model Compatibility Most Core Rig Drills and B+Btec; Karat 180BG and Karat 180MG