10X MR115ZZ Miniature Metal Shielded Rubber Sealed Bearing Model 5 x 11 x 4mm JD
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Bearings reduce friction by providing smooth metal balls or rollers and a smooth inner and outer metal surface for the balls to roll against. These balls or rollers "bear" the load, allowing the device to spin smoothly.
Size: 5 x 11 x 4mm（Outer Diameter x Inner Diameter x Thickness）
10 x Bearings