XIKE 6004ZZ Ball Bearings 20x42x12mm, Chrome Steel｜Pre Lubricated｜Double Metal Seal｜6004 2Z Deep Groove Bearing with Sealed, Pack of 4.

6004ZZ 20 mm inside diameter, 42 mm outside diameter, 12 mm width Constructed of rugged chrome steel and rubber seals Double seal protects the interior for longer life Free replacement or full refund within 6 months XIKE bearings are your simple and efficient choice