Well Drilling Single Roller Cone bit

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{"cid":"69678","pid":"17103556","pimg_url":"\/\/img1.b2bforus.com\/1a\/61\/f6be46743fc3\/product\/50865072_s-w400xh400.jpg","name":"energy & Mining 8 1\/2 215.9 Single Roller Bits For Rock Core Barrel Reamer Bit","attrs":{"Price":"Negotiable","MOQ":"1 Piece","Delivery Time":"Negotiable","Brand":"HJ"}}

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{"cid":"69678","pid":"17103528","pimg_url":"\/\/img1.b2bforus.com\/1a\/61\/f6be46743fc3\/product\/50864910_s-w400xh400.jpg","name":"Oil Roller IADC637 Cone Bit 8 1\/2\" 215.9mm Tricone Single Cone Bit For HDD Stacking","attrs":{"Price":"Negotiable","MOQ":"1 Piece","Delivery Time":"Negotiable"}}

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{"cid":"69678","pid":"17103495","pimg_url":"\/\/img1.b2bforus.com\/1a\/61\/f6be46743fc3\/product\/50864751_s-w400xh400.jpg","name":"Oil Tricone Single Roller Cone Bit 8 1\/2\" 215.9mm For Core Barrel","attrs":{"Price":"Negotiable","MOQ":"1 Piece","Delivery Time":"Negotiable"}}