1, Diamond core drill bits drilling holes in concrete wet use 2, Fast, smooth drilling and long life 3, Full range of ... up to 1500mm.6, Available wall thickness: 1.5mm, 2mm, 2.5mm, 3mm.7, All kinds of thread adaptors or connections ... in 1-1/4"UNC, 1/2"BSP,5/8"-11, M14, M16, M42, CRI28 or PIXIE, etc.8 ... provided upon request. Diamond core drill bits for concrete wet use