Professional wet diamond core drill bit for fast drilling with exceptional performance. These are high performance revolutionary diamond segments laser welded onto wet core barrels. They will outperform your expectations when used for drilling construction products, including reinforced concrete. This is a professional wet diamond core drill bit. Whether used on a fixed rig or a hand held drill, when assisted with a supply of water, will produce an exceptionally clean, fast, cut. Sizes 52mm-400mm available in lengths up to 2000mm. Click here to view our range or extension bars which fit these wet diamond cores.