... head bolt: 1Materials:Carbon steel 2Size:M30*100,150 3Finish:Black 4Certificate:ISO9001:2008,SGS Fasteners M30*100,150 black half ... thread hex head bolts Details of the product:1Materials: Carbon steel ... 150 Black hex boltsM27*90,100,110,120 Black hex head bolts4. Factory view figures: PackagingFactory viewTesting equipmentsWorkshop Welcome ...