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| Product Name | Guide Bushing | Material | 20Cr |
| Brand | Cungang | Surface Hardness | HRC60士5 |
| Surface | Smoothness Ra1.6 | Surface Tolerance | Surface tolerances -0.01 to -0.06 |
| Length Tolerance | L士2 | Bore Tolerance | +0.01 to +0.06 |



| Product Name | Guide Bushing | Material | 20Cr |
| Brand | Cungang | Surface Hardness | HRC60士5 |
| Surface | Smoothness Ra1.6 | Surface Tolerance | Surface tolerances -0.01 to -0.06 |
| Length Tolerance | L士2 | Bore Tolerance | +0.01 to +0.06 |