Comparison : Item # F6700, 0.3937 Inch (in) Bore Diameter (d) Flanged Open Extra Thin Metric Ball Bearing
Item # F6800, 0.3937 Inch (in) Bore Diameter (d) Flanged Open Extra Thin Metric Ball Bearing
Item # F63800, 0.3937 Inch (in) Bore Diameter (d) Flanged Open Extra Thin Metric Ball Bearing
Item # F6900, 0.3937 Inch (in) Bore Diameter (d) Flanged Open Extra Thin Metric Ball Bearing
Item # F6701, 0.4724 Inch (in) Bore Diameter (d) Flanged Open Extra Thin Metric Ball Bearing