"This 14in. barrel length core with a segmented height of 7mm provides fast penetration through such materials as reinforced concrete, cured concrete, refractory brick plus other hard materials and asphalt. Run WET ONLY. Built for a variety of drilling jobs. Use on any conventional core drill rig motor. Do not use with Hilti rigs. Recommended Use Concrete, brick, asphalt, Usage Wet, Thickness in. 3/16, Length in. 14, Thread Size 1 1/4in.-7, Diameter in. 6. 6in. dia. x 187in.W x 1-1 1/4in.-7 arbor"