... eyecolorred,black ,blueweight2kg,2.5kg,3kgpackage6pcs/p.p bag,wire steel,carton boxhardnessBefore heat treatment the hardness is around 28HRC,After ... specialize in manufacturing and exporting various kinds of superior steel shovel,pick,hoe,fork,rake,post hole digger, ... certificate.Our certificate:Our product of our company railway steel material ,different types,different color selectionshovel all kind ...