1.PDC drill bit 2.best price 3.wide size code 4. ... Y3107/M715 PDC drill bit are as following:1.using a self-sharp-type sintering in tungsten carbide impregnated carcass on ... have many industry experts in research and manufacture of diamond bit, also with many technical staff familiar with drilling. ... and so on.Here is the range of tricone drill bit:sizebit typein.mm6152.4136,127,517,537,617,6376 ...