9 1/2（241.3mm）thread type Tricone Drill Bits Three Cone Bit 20 Inches for Construction

8 3/8（212.7mm）Inches Tricone Drill Bits API Standard For Oil And Gas Extraction

8 1/4（209.6mm）Terrain Api 3 Cones Bit For Oil Based Geology and Water Based Geology

6 1/2（165.1mm）Energy Mining Rotary Tricone Rock Drill Bit 2 1/2 API Reg Thread Long Service Life

6 1/4 (158.8mm) efficient tricone bit 24 23 inches for oilfield and coal mining

6(152.4mm)Carbide Material Tricone Rotary Drill Bits Oil And Gas Extraction Usage

5 7/8(149.2mm)Mining Machine Parts Tricone Drill Bits For Construction Industry

9 5/8（244.5mm）Roller Bearing Carbide Hammer Drill Bits 3 Cutters 6 5/8 API Reg

20 (508mm) Long Life Span Tricone Drill Bits Tricone Rock Bit for oil wells and coal mining

17 1/2（444.5mm）Construction Works Tricone Rock Roller Bits Low Noise Horizontal Directional Drilling

13 3/4（349,3mm）Rotating Api 3 Cones Bit Carbide 3 1/2-26 Inches

14 5/8 (371.5mm) API standard tricone bit for oil, coal, and natural gas mining

3 7/8 Inches Tricone Drill Bits With Roller Bearing Processing

Tricone Bit Weight 2-3/8 API Reg Thread Tricone Roller Bits For Oil Drilling

Oil Based Geology Tricone Drill Bits With Overall Length / Dimensions Of Three Cone

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Tricone Drill Bits