... M123/122,M223/243/232,M323/333,M423,M841 3.For oil/gas/petroleum Oilfield PDC drill bit/ ... PDC oil bit/PDC bit/ PDC blade bit/PDC drilling bitDiameter(in):3-7/8,8-1/2,9-7 ... 1/2,6-5/8,7-5/8Cutter Size:3/8”,1/2”,5/8”IADC:M123/122IADC: ... balling.Size availableSizeNumber of BladesCutter SizeAPI Conn5 1/2”3 Blade13mm2 7/8” API REG5 5/8”Flat ... REG6 1/2”5 Blade13mm3 1/2” API REG6 3/4”5 Blade13mm3 1/2” API REG7 7/8 ...