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Dth drill bitsmanufacturer, factory, supplier from china (total 24 products for dth drill bits)

Use one hand to hold the drill bit in place. tighten the jaws of the drills chuck by turning the metal chuck key with your other hand in a clockwise manner. tighten the chuck jaws as firmly as possible. remove the chuck key, and take your hand off the bit. test the drill to see if it is drilling properly.

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We are an enterprise that export oil Down the hole bit supplier to China, we are approved by the relevant state registratio. Primary oil Down the hole bit supplier and sell to different regions in China, product out there upon request. We've got the spirit of "customer initial, honesty first" principle, using a quantity of enterprises established long-term cooperative connection.

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