1.wide size ad range. 2.reasonable price and excellent quality 3.custom-made 4.delivery on time 5.ISO,SGS certified 1.wide size ad range.2.reasonable price and excellent quality3.custom-made4.delivery on time5.ISO,SGS certified Size available:PDC bit specificationsAPI CONN.(in):2 3/8 2 7/8 4-1/2,6-5/8,7-5/8 Cutter Size:1308MM,1613MM,1616MM,1619MM,1919MMIADC:M123/122IADC:M223/243/232IADC:M323/333/ ...