Bearing Item: 1480 MR148ZZ 8x14x4 mm 1360 686ZZ 6x13x5 mm 0940 684ZZ 4x9x4 mm 0830 693ZZ 3x8x4 mm Structure: Deep Groove Material: Bearing Steel Closures: Metal Seal Lubrication: Grease Magnetic: little Hardness: 58HRC