... 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, ... 537,617,6379 5/8244.5127,517,537,617,6379 7/8250.8127,517,537,617,63712 1/4311.1114, ... 617,63713 5/8346117,126,127,517,537,617,63714 3/4374.6124,517,537,617,63715381124,517,537,617, ...