Brand:zhonghe
MOQ:10000
Quantity:100
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Material standard: GCr 15
Hardness standard: HRC60-64
Grade:G1,G2,G3
length tolerance:0.2
diameter tolerance:0.0008
TIR:0.0006
Ra:0.05
End surface shape: round, flat,crowning
Surface finishing: polish-grind,superfinish grinding
