zuanlongbits@gmail.com

+86-029-82612068

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Email: zuanlongbits@gmail.com

Tel: +86-029-82612068

Fax: +86-029-82612068

Address:No 66, Changming Road, Xi'an, Shaanxi Province, China

High Quality 113mm Three Wing PDC Concave Drill Bit

High Quality 113mm Three Wing PDC Concave Drill Bit

The four wings normal type concave drill bits suits for f<=10, the reinforced type suites for f<=15

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