High Air Pressure DTH Hammer Drill Button Bit Yanggu Jinyou Tool Co., Ltd. Base Info Model NO.:Jygj-004Surface Treatment:PolishingManufacturing Process:StampingMaterial:Cast IronTransport Package:Wooden BoxSpecification:3 Inch to 20 InchOrigin:ChinaHS Code:8402200000 Description Pre:Xz Carbide Has Very Good Quality of Rock Hammers for Sale Next:Drilling Equipment/China Products/Suppliers, Down/SD DTH Hammer for Mining