shaft 1.Lenths:20mm~800mm, Straightness:0.01mm 2.Diameter:2mm-50mm, Roundness: 0.005mm. 3.Material, steel, ss steel etc Shaft1. material:carbon steel:C35,C45,40Cr etcalloy steel:42CrMo,35CrMo,9cr2V, 42CrMo4,70Mn and so on2. description: 1Diameter200-2000mm2Weight1-30Ton3PackingBarrel with wooden pallet or strong nylon bag or as your requirement4 Surface Treatmentblack anodic treatment etc5 ...