Basic Info.Material:DiamondUsage:DrillingManufacturing Arts:WeldingApplication:for Drilling Reinforced Concrete,Website:http://www.rejeedrilling.com, Green ConcreteWelding Method:Laser, Silvered ... -600mmOrigin:ShaanxiHS Code:82075010Production Capacity:1000PCS/MonthProduct DescriptionProfessional China Diamond Drill Bit for concrete Manufacturer, 20 years experience, Factory manufacturer, Quality ...