100x3030스크류 가스배출용 M100x7p나사가공#한국공작기계 #thread #범용선반 #titansofcnc #cnc #screw #lathe

100x3030스크류 가스배출용 M100x7p나사가공#한국공작기계 #thread #범용선반 #titansofcnc #cnc #screw #lathe

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