With the Carat Brilliant eb diamond core bit, you drill clean and precise openings through tough materials like reinforced concrete and solid stone. Its laser-welded segments prevent tooth detachment during demanding core drilling tasks. Featuring an 86 MM diameter and a 420 MM usable length, it makes creating deep penetrations for plumbing, drainage, and ventilation pipes straightforward and reliable. The continuous water cooling suppresses dust, prevents overheating, and maintains a high drilling speed. Thanks to the standard 5/4" unc (1 1/4") connection, you easily mount the bit onto common core drill motors for optimal power transfer on every job.