... bending bar by hot forging the whole dody Double head bending bar:Experienced in manufacturing the wrenches by hot ... -M20M5 and upfeatureslow carton,high tensile,stailessstandardDIN,ANSI,BSW,AS,JS,ISO,ETC.finishbright,zinc plated,hot-dip galvanized,mechanical plated ... and threaded rods. If any questions ,kindly let us know. Double head bending bar