● Diameter: 6mm-300mm
● Material: DIN CK45, SAE1045, JIS S45C, JIS STKM13C, SAE1026, ST52, 20MnV6,42CrMo4, 40Cr,AISI 304, AISI 316, AISI 431
● Tolerance: ISO f7
● Chrome layer thickness: 25(+/-5)μm
● Roughness: ≤0.2μm
● Hardness: 850-1150HV
● Straightness: ≤0.2/1000mm
● Roundness: Half of the diameter tolerance