1.execllect quality,reasonal price 2.ISO,API SGS certified 3.Custom-made 4.wide size and IADC code 5.delievry on time 1.execllect quality,reasonal price2.ISO,API SGS certified3.Custom-made4.wide size and IADC code5.delievry on time Size available:IADC CODE AVAILABLE:STEEL TOOTH TYPE:116,117,126,127,136,137,216,217,317.Tungsten carbide insert:417,437,517,527,537,547,617,637,447,737.627.Rang ...