<br />This core bit is manufactured to the highest standard to specifications laid down by one of the UK's leading concrete cutting companies for use by their own teams. The segments contain far more diamond than normal which allows them to cut through the hardest concrete with ease. The segments are laser welded to the long 450mm barrel and can be replaced. <br /><br />This core is ideal for flint and river gravel as well as heavily reinforced concrete. It is very fast and has a good life. <br /><br />Approx 4.25" 4 1/4 inch <p>107mm approx 4.25" Core For Wet or Dry Drilling through brick, stone, reinforced concrete, concrete and block work</p> <p>450mm long to get through most walls in one go even with the thickest plaster. Designed, tested and used on the hardest flint concrete. </p> <p>Bycon is trusted in the trade. A brand you will find in specialist hire centres. Designed for constant professional use.</p> ">