RoboSavvy 6704 2RS Bearing (27mm outer, 20mm inner)

61704-2RS (Also known as 6704-2RS) Bearings Sealed Metric Thin Section ball bearing. Sealed Bearings have rubber seals that contact both the inner and outer race of the bearing; this prevents moisture and dust from damaging the bearing. Sealed bearings are generally used for wheel bearings or any application where dust or moisture is present Please see Dimensions below: Internal Diameter: 20 External Diameter: 27 Width: 4 Please note this bearing has two rubber seals.