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Drill Pipe Round Thread, American-Made 60-Degree Internal and External Trapezoidal Blade 16er/Nr10/8apird22verapi/4/5/6, Find Details and Price about 60 Degree Vertical Mounting Thread Turning Tools from Drill Pipe Round Thread, American-Made 60-Degree Internal and External Trapezoidal Blade 16er/Nr10/8apird22verapi/4/5/6 - Sanhe Xiyan Mechanical Equipment Sales Co., Ltd.