... time The characters of the Y3107/M715 PDC drill bit are as following:1.using a self-sharp- ... many industry experts in research and manufacture of diamond bit, also with many technical staff familiar with drilling. ... We are handling in tricone bits, PDC bits, core drill bits, drilling accessories and so on.Here is ... the range of tricone drill bit:sizebit typein.mm6152.4136,127,517,537,617, ...