... 2.Application:solid wall,water well drilling 3.rock drilling tool rock drilling tool Alloy steel Body, made by ... wall,water well drilling,trenching,mining,tunnelling. Place of originLiaocheng.ChinaApplicationDrilling,Trenching,Mining and Tunnelling,RecyclingCertificationISO9001:2008MaterialASTM4142 / ... MonthDelivery time4~8 weeks Product/Service (We Sell):road milling pick & holder,round bit,tooth ...