1.PDC drill bit 2.best price 3.wide size code 4.certified ... .delivery on time The characters of the Y3107/M715 PDC drill bit are as following:1.using a self-sharp-type ... 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.mm6152.4136,127,517,537,617,6376 ...