Shielded Z2 Lever BearingsWhy Choose This:★R4AZZ (I.D.=1/4", O.D.=3/4", Thickness=9/32")★ABEC Tolerance 1 (P0), Z2 Noise Level for most general use★Chromium Steel long-life bearings, smooth and low noise★r4a-2z bearings are shielded on BOTH SIDES to keep lubricant in★Static load rating of 615 newtons and dynamic load rating of 1480 newtons.
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