6004-2RSNR Sealed Bearing 20x42x12mm With a Snap Ring Outer Diameter - 41.8mm each bearing has Shield on

each bearing has Shield on one side to protect the bearing from dust or any possible contamination

it features a resin retainer and 4 ball circuits

SMSFC8G NB Bearing

Size: 55 x 78 x 16 mm

6004-2RSNR Sealed Bearing 20x42x12mm With a Snap Ring Outer Diameter - 41.8mm each bearing has Shield on6004 2RSNR Ball Bearing with a Snap Ring 20mm x 42mm x 12mm One Bearing 6004 2RSNR Ball Bearings with a Snap Ring. the inner diameter is 20mm outer diameter is 42mm and the width is 12mm. The bearing is equipped with two rubber seals to shield against dust and contaminants plus its pre lubricated with grease so its ready to roll right away. 6004 2RSNR Ball Bearing with a Snap Ring Deep Groove Ball Bearing Closures: Two Rubber Seals Lubrication: Pre