... ,Thickness:9mm 2.Use:mining,water and oil drilling 3.Sturdy&effective for rock drilling 4.Available in all sizes Outside Diameter:60 ... bits DTH hammer,DTH drill rods ODEX,SYMMTRIX1.top hammer drilling tools inculding thread button bit ,copling,taper rods and bits,shank ... adpter and etc.2.DTH drilling tools including air DTH hammer,DTH bits with COP,DHD,QL ...