China 73mm Carbide Steel Step Drag Bit for Drilling

Model Name :：2 7/8" = 73mm

Drilling Tools 4 1/2" Step Drag Bit for Water Well

Model Name :：4 1/2"=114 mm

USD45.00 - USD50.00

China 120mm Carbide Steel Step Drag Bit for Sales

Model Name :：

China 120mm Chevron Step Drag Bit for Sales

Model Name :：

China 98mm 3 blades step drag bit for well drilling bit

Model Name :：3 7/8 inch=98mm

USD41.00 - USD42.00

china 76mm Step drag bit for mining drilling

Model Name :：

USD23.00 - USD25.00

China 8" step drag bit for well drilling

Model Name :：

USD188.00 - USD198.00

EAST 4 7/8" three step drag drill bit suppliers

Model Name :：