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RitaThe tricone bit quality is good -
Guramyour bit retrived from the hole ,just let you i am pressed , it performed well .And retrieved bit is like new .
36" Tricone Roller Hole Opener Trenchless Drill Bits For Pipeline
| Diameter: | 36'' |
|---|---|
| Palm Model: | 311.1mm （12 1/4" Tricone Bit） |
| Palm Quantity: | 9 |