Basic Info.Type:Core Drill BitMaterial:DiamondCustomized:CustomizedUsage:Stone Cutting,Website:http://www.rejeedrilling.com, Drilling, Engineering MaterialManufacturing Arts:WeldingKind:Diamond DrillSpecification:14mm to ... company specialized in producing laser welded diamond core drill bits, which are mainly used for wet cutting reinforced concrete, concrete, masonry walls. Laser welding not ...