Concrete is an important material of buildings and structures. When we need to make holes on the concrete or get core from the concrete, the diamond tools we need is concrete core drill bit. Concrete core drill bit comes in barrel and core bit segments. The diameter and working length of the barrel depending on the request of your drilling project. For concrete core bit, the typical diameters are from 25mm to 600mm, and the typical working lengths are from 200mm to 450mm. Sunny Superhard Tools uses high-quality imported diamonds(Element Six from Ireland) in our concrete drill bit. Diamond segment formula of high cobalt concentration ensures its high performance. If you have no request for the segment shape, we recommend you to choose the roof core bit segment. The roof type segment is our most popular core bit segment, and it performs very well in drilling projects. Features: Imported diamond particles from Ireland - "Element Six" Excellent diamond segment formulas with high cobalt concentration Various diamond segment shape to choose from High performance & long lifespan Optional Size of diamond core bit (other specifications are available upon request) OUTER DIA. DRILL DEPTH NO.OF OUTER DIA. DRILL DEPTH NO.OF mm mm Segs. mm mm Segs. φ25 450 3 φ125 450 11 φ28 450 3 φ130 450 11 φ30 450 3 φ135 450 11 φ32 450 3 φ140 450 12 φ35 450 3 φ145 450 12 φ38 450 4 φ150 450 12 φ40 450 4 φ160 450 12 φ45 450 4 φ170 450 12 φ51 450 5 φ180 450 13 φ55 450 5 φ190 450 13 φ60 450 5 φ200 450 15 φ65 450 6 φ210 450 16 φ70 450 6 φ248 450 16 φ75 450 7 φ298 450 17 φ80 450 7 φ348 450 20 φ90 450 8 φ398 450 28 φ100 450 9 φ449 450 32 φ108 450 9 φ498 450 35 φ112 450 9 φ548 450 38 φ118 450 10 φ598 450 42 φ120 450 10       Concrete Core Drill Bits Applications Diamond Core Drill Bit Segments and Magnet Holder for Retipping