686ZZ (I.D.=6mm, O.D.=13mm, Thickness=5mm)686-2Z bearings are Shielded on BOTH SIDES to keep lubricant inMade from Carbon Steel, durability and resistance to under heavy loadsABEC Tolerance 1 (P0), Z2 Noise Level for most general useStatic load rating of 354 newtons and dynamic load rating of 920 newtons.
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