1. 42CrMo4 ROD,MAGNETIC POWDER CRACK TEST. 2.long and big dia. 3.din slot /unstandard slot requirement/gap 4.durable/flexible 1.the materialC45,42CrMo4,C60....2.usageindustrial equipment3.proccessCNC4.quality controlrunout is 100 percen inpection5.new weight0.52kgs-15kgs6.strengthspecial process,small production lot size,competitve price