Product Details1.Made from Carbon Steel, durability and resistance to under heavy loads2.Shields on BOTH SIDES of the bearing to keep dust out. Suitable for high speed operation3.Size: 683ZZ (Inner Dia.=3mm, Outer Dia.=7mm, Thickness=3mm)4.ABEC Tolerance 1 (P0) for most general use5.Pre-Lubricated, Easy to maintain.
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