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Section XV — Base metals and articles of base metal

National subdivision

82071

Rock drilling or earth boring tools:

Common commodities
Oil well rotary tricone drill bitsMining percussion roller cone bitsDiamond core drill bits for earth boringGeothermal hole drilling rock augersWater well hammer drill bitsRock socketed and stabilized drill bitsEarth augers for civil engineering worksCoring drill bits for soil samplingDouble-tube reverse circulation drill bitsHard rock bit and adapter set

Codes