Manufacture DTH Hammer/Drilling Tool in Drilling Equipment From China Yanggu Jinyou Tool Co., Ltd. Base Info Model NO.:good qualitySurface Treatment:PolishingManufacturing Process:StampingMaterial:Cast IronTransport Package:Wooden BoxSpecification:3 Inch to 20 InchOrigin:ChinaHS Code:8402200000 Description Pre:Manufacture DTH Drill Bits Hammer in Drilling Rod From China Next:Super Wear Rubber Lining for Gold Mining Industries