API 3 7/8'' IADC537 Drilling Bit Tricone Roller Rock Bit for Blasthole

Model Name :：S537

API 12 1/4" 311.2mm IADC617 LILIN TCI Tricone Bit Roller Cone Bit for Hard Rock

Model Name :：LS617G

API 5 7/8" IADC517 TCI Tricone Drill Bit Rubber Sealed Journal Bearing Bit

Model Name :：S517

API 5 1/4'' IADC517 TCI Tricone Roller Bit Carbide Insert Tooth Drill Bit

Model Name :：S517G

API 17 1/2" IADC517 TCI Tricone Drill Bit Roller Cone Bit for Well Drilling

Model Name :：HA517G

API 4 1/2'' IADC437 TCI Tricone Bit Three Cone Bit for Water Well Drilling

Model Name :：S437G

API 3 7/8" IADC517 Tricone Roller Bit Carbide Insert Drill Bit Factory

Model Name :：3 7/8" S517

API 8 1/2" IADC437 Tricone Bit Three Cone Bit Roller Cone Bit

Model Name :：8 1/2" IADC437