all our thread rolling tools material use is Cr12MoV,  for hardness we use vacuum furnace to sure all rolls can be HRC58-HRC60,for quality before  ship goods we will do full inspection , 

• Other Tools(1)

Tool,Rolling Carts,Woven Thread,Thread Holders,Fabric And Thread,thread Fitting,Ransport Rolling Machine,Rolling Door Remote Controller,twist silk thread,Screwdriver Tool,Agricultural Tool,Tool Part,Hoist Tool,Angling Tool,Gardon Tool,Turning Tool,Tool Lanyard,Tool Cabinet,Sports Tool,USB Tool Kits,Agriculture Tool Part,Turnign Tool Holder